I watched this a day before commenting, but couldn't shake the itch of having to post....The mix of electronics and mechanical repair/diagnosis in this video reminds me of how much there is to learn out there, how much I still personally have to learn, and how individuals like Shango, should be role models/inspiration to us all to learn as much as we can about everything. Shango, your posts about laying hardwood flooring, repairing old mowers a/c compressors, old homes, old mines, music, and the plethora of electronics has been nothing short of inspiring. Your satirical commentary about politics and society in general prove how well rounded of an individual you are. Thank you for taking the time to post your adventures, and expertise with us! The mix of content is fascinating and appreciated.
I worked on a Kenwood receiver that had the same power switch and it was doing the exact same thing. I took it apart, cleaned the contacts and bent them a little to make better contacta and it's been working for years since.
Interesting observation, I was trying to find the manufacture as it seems to similar to Trio, Kenwood and Technics in the Amp section. I think it was made in Korea but may be wrong.
@@stephensams709 This was actually a Sherwood receiver - or are they equivalent? Anyway, good on you Stephen, fixin up & cleaning up the power switch! Good job! I just wish Shango would have done the same, even if he eventually ended up bypassing it anyway.
My fathers Kenwood KR-3090 suffered a similar issue tho it went unnoticed for many years. He used it in the garage fairly close to a fluorescent fixture running 4 8' T12 bulbs. He always blamed those lights for the excess noise on the receiver, tried every trick in the book to reduce the interference & the whole time the problem was actually the switch intermittently arcing. Luckily the switch had two sets of internal contacts and the 3090 only used one side/set so I just swapped them around. That was fortunate as the contacts that were previously hooked up were thoroughly twinkoquirkulated.
Had it been my own tuner device, I'd have done exactly the same thing. Fully understand Shango's reluctance to go down that path, considering how litigious the USA is & especially California. Does look a lot like a Sherwood design
I've only pulled one apart, but it was very similar. That "swash plate" design is how most average gas pressure washer pumps work too, but they typically only have 3 pistons.
@@johnchildress6717 HC-12a is a Propane/Isobutane mix. HC-22a is straight propane. HC-12a is supposed to be a drop in replacement for R12 and R134a. HC-22a is supposed to be a drop in replacement for R22 in commercial applications.
When filled into a 134a system does the butane still pull the PAG oil with it? I was told it only worked with the R12 mineral compressor oil. Maybe Shango has to flush the system and add mineral oil, then the compressor wont run dry...
This made me nostalgic for my old '67, according to Sams, S-8000 III FM tuner/amp which I bought used from an "antique" store back in the late '80s. I kept it going until the other output transformer failed back in 2014. Best FM tuner (especially) and sound system I ever owned ! I still have the remains of it and would love to have it back in prime condition again. The 7868 outputs were tempermental as He)) to bias but fiercely superb sound and volume. Even without the expense of the output transformers, it would be expensive to recap it electrolytically and retube the output stage but I'm tempted again and again. The main problem is the low profile design of the chassis and case. The multicell filters can't stand any higher than 2.5" max and hardly any room to use individual units. Sherwood really crowded the house on that model. The replacements I had installed about 4 years earlier all got repurposed after it finally died so it would really be a build now to resurrect. Then there's the replacement output transformers dimensions to consider as well...plus the overall cost. But, this video really set me to missing it something terrible. I've never been as happy with the equipment I've been using since. Good luck on the AC 🧊. It's that time of year again 🥵.
My dad had one of these tuners that had the signal strength and the same tuning arrows. He had it piped into an Olson AM-744 amp and some realistic 15" woofers and horns with a custom cabinet that he built. He had 2 turntables, an EQ, dual tape deck, and a state of the art of its time CD player. He had this setup as a backup and gave it to me to use when he upgraded. The thing blasted. I learned how to set up audio equipment on this setup and had it blasting. Although it was maybe 50 watts per channel, it sounded way higher. Eventually we were forced to move up north 300 miles away and had left it all at the house we lost. Found out that most of the equipment was collectible and worth a lot of money. He bought most of it at a pawn shop and went to radio shack to get the speakers and other equipment to make his DJ business function.
Replaced many of those power switches in the 70;s & 80's at Radio Shack. Had to buy the complete switch assembly as the power switch wasn't available by itself. Neat compressor teardown.
That receiver looks very much like a MCS Series (JC Penny house brand) from the same era. The only difference was the lack of a VFD. Modern cars have too much electronic junk in them. I'd go vintage on vehicles, but parts for old vehicles are nearly impossible to find. I had a 1976 LTD that had the 351M and FMX transmission. Still was going until I started having problems keeping it on the road straight. It was a hand full to drive. Now, I have a 2008 Jeep JK that is otherwise a decent vehicle, but the transmission has issues and will get stuck in 2nd gear when hot.
The font on those controls is identical to my 1976 vintage Pioneer H-2000 AM-FM 8-Track with Phono jack. Probably same manufacturer. Mine has dedicated flip-up power switch. Still works today😊
Great video Shango!. Found them both deeply interesting, as I do all your videos & always learn something new or different as the principles can be applied to far more than what you just showcase, so thanks heaps for all that you do in sharing these videos with us!. The old 1980s tuners are great, as long as the vacuum fluorescent display is OK i.e. Panasonic DR-28/RF2800, DR-31/RF3100 etc. Facing similar issues with my own car though mine is more the crankshaft pulley/harmonic balancer bolt & woodruff key which were surprisingly very difficult to locate) & eventually had to order parts from Japan which actually fitted as the 17mm crankshaft pulley bolt wasn't available locally despite extensive searches, so took a punt & banked on the fact it was a Toyota 4A-FE motor & came up a winner. Many times, car manufacturers use the same parts on different engines & make/models & you may get lucky & one like Ford, guaranteed would have parts commonality across many models to save production costs. Have similar sentiments in buying a new car as Australia is having a similar mentality to California when it comes to EV, mind you it makes little difference anyway when the rest of the world is building even more coal power stations so essentially we're trying to make a hole in a pond of water. Nephew is a mechanic who works in a busy workshop as his job & he tells me most of the new car engines are basically junk after 100000km (62137 miles). What I fear with EVs is they'll essentially be all "black box" electronic modules i.e. John Deere anti right to repair on steroids. I feel they're implementing ill thought out EV technology which works great for inner city with good power infrastructure, and if it was so great & cheap then why isn't Africa & Asia moving to EVs on masse. Households argue over mobile phone battery charge, can one only dare imagine this on a grand scale with EVs!
I replaced one of those compressors on a friends mustang. It failed when the car only had 45k miles on it. As you said,the only positive thing is that they are very easy to replace. I enjoy your automotive and other videos as well.
@coreybabcock2023 Don't know anything about that. I don't own or drive anything newer than the 60's. Just know that my friends mustang compressor failed really early
The dial, digital readout and power meters as well as the parts inside of it look like a clone of a Sansui G-4700. If the digital readout's IC takes a dump, it is unobtainable. The 4700 is rated at 50 wpc. Judging by the transistor complement, I'd expect similar performance from this Sherwood. It sounds like it has protection circuitry unlike the 4700. Definitely a plus. I would have checked the DC offset while I had it apart. Plenty of real estate on that back panel for a toggle switch, but I get it if the owner doesn't want it molested. Enjoy your channel. Highlight of my Saturdays. ✌️
An aside to your repairs, I appreciate your knowledge of the local bandplan. Listening to KJLH, some cool urban "oldies". They're playing a string of Luther Vandross as today would have been his 73rd birthday.
A fun fact about teflon. I have parrots and if you overheat teflon (and it doesn't take much to do that, say 500 degrees), it will off gas something that will make every bird in your house drop dead. In the coal mines, when your parakeet drops dead its a sign that you need to evacuate because the air's either not there or heavily contaminated with something you don't want to be breathing. I switched out all my nonstick stuff with cast iron because of the birds, and you know what? I don't miss it.
Your Explorer has done you well, specially for it’s age. mine is slightly newer then your one as its a 2006 & I've only had to replace the starter motor & alternator. But now it’s suffering from a blocked catalytic convertor & worn front shocks! It’s got 305,000 km‘s on it, so can’t complain too much about the old car, i don’t hardly drive it now as i’ve got my 2006 Beetle so the kids use the Explorer/Territory to learn to drive for their driving hours on their learners licence.
How interesting about the power switch inducing noise; I've never seen that before. That's a solid diagnosis. As an aside, I never liked solid state hifi amps like these; they're just too temperamental. Dozens of transistors to fail, and if it's the driver transistor that shorts, you get the added "benefit" of it taking out the output transistors with it
Sherwood S-8400CP 40wpc, $360 MSRP new in 80-81. I use the capacitor wizard for checking out the power switches, it does a great job at reading low ohms. Will be using the capacitor wizard for tracing out a short in the regulated power supply in a Panasonic boom box. Much better than cutting traces.
One thing you could do with that intake to repair it is to get some silicone rubber hoses and make up your own intake tubing but you might have to drill a hole or two for the smaller hoses that come from the intake.
If it was my truck i would have used R152 from the Air duster cans you can buy from the store, Very close to R134A you use about 10% less then R134A. The R600 that is a also a very good Idea. I bet you could also get away with propain for your BBQ AKA Dirty R290 LOL . Cool video. Suction side should be beer can cold, liquid line should be whiskey bottle warm. 😁
First of all, propane is cheaper and more convenient than butane. I'm not sure if it works as good as a refrigerant, but I've heard it works well. (use at own risk). Also, go to a place that sells air brake alcohol for trucks and use that with compressed air and blow it though BACKWARDS with the lines removed. Put a clean white bucket to catch all of the gray matter and flush until it disappears. The alcohol doesn't mix with the oil, BUT it evaporates and air brake alcohol is anhydrous, unlike isopropyl rubbing alcohol. It also was never embargoed along with TP on St. Patrick's day 2020. Those vacuum guns sold at Harbor Freight that suck up solvent and spray it out the end that hook to your air compressor work well. Treat your accumulator (or receiver dryer) like it's an oil filter. It has basically like a "Do Not Eat" bag like what comes in new shoes with little beads in it. This "filter" will hold onto about 3-4 ounces of oil in it that will NEVER leave that fun little bag of uneatable goodness in it, so don't be afraid to always add EXTRA oil when changing this. I've had a lot of people argue this with me, but I've changed A LOT of compressors in my 3 decades in a past life working on this crap. On the stereo: I love the back l;it display. I wish they would bring back VFD displays. I've never seem a VFD used with a dial pointer as well, so really cool unit! On a side note, I have a 1950's Challenger 2x 6V6 amp that has the power on the treble! I now leave it and switch it off/on with a power strip.
Interesting to see the teardown of the compressor. I've replaced a few, but never actually took one apart, surprisngly. Seeing how that swash plate piston interface in this design is, can't say I like it. The balls inside each piston look like they just sit in a pocket, which if so, are like a bushing. Wear is guaranteed, and low lubricant absolutely detrimental. That is a lot of surface area that ball rolls against. Seized up, and friction welded. I can think of a round bearing+roller pin arrangement the ball could sit in that may be better, but that would be some super precision machining. Still interesting to see though, as was the other swash designs I just saw doing a search.
The first R12 replacement were just a mixture of propane and nitrogen. The nitrogen was just fill gas. Propane boils colder than R12. You had to run 45 or more suction pressure to keep from freezing the evaporator.
cleaned one of those switches on a pioneer SX-550 & it fixed the issue but then later the power amplifier twinkocrwerkulated transistor popcorn machine....(Unrelated to the switch problem)
I flushed the air conditioning system in my Chevy truck when I replaced the compressor and accumulator / dryer on the system. It really did a good job on getting the nasty stuff out. Maybe you could try that....
Sherwood always had power switches mounted to the volume or tone switch. In the mid seventies, I purchased a model 7010 receiver brand new at a good price. It sounded great, especially on Bohemian Rhapsody. The bias was critical on the output transistors as I remember. They're sleeper receivers.
Even as a repair tech here in the Uk I didnt see all the digital fluorescent, led and slide rule displays on a tuner amp, the nearest was waltham who did something like this but the fluorescent display was just a clock. I'd say the digital frequency display is a frequency counter, as on Am it tuned in 1kc steps, if I'm right in the Us synthesised Am tuners tune in 10kc steps, here its 9 kc steps.
I've had a few 1980's Sherwood branded receivers come through my workbench in recent times. They seemed to be fairly decent. They did use a lot of STK amps later on during the 1980's. However they became to offer audio equipment in your choice of silver or black... people assume the black faced (still aluminum) is BPC and nobody wants it. Now if I had a dollar for each one of those Alps power switches.. I take them apart and polish the contacts. Not sure why companies did that switch on the speaker selector on models with a speaker relay, but many Pioneer and Realistic receivers had it. With the low models that did not have a speaker relay, it removed the amp from the speakers to eliminate power down noises.
Yeah I never really understood the reasoning of putting the power switch into the tone control and the likes. Volume control makes the most sense, you're almost always going to set a desired volume when powering up a device. Anything else for me takes enough mental energy each time to be annoying. I guess some manufacturers just wanted to be "different" but it sucks for us tinkerers because those controls are now long extinct and you can't get replacements. Even a good volume pot/power switch combo can be tough. Ironically the one receiver I have with a similar issue is a Sherwood as well. It's a Sherwood S-7110. But the power switch failed into the on position on mine, so it bypassed itself. This model does fortunately have the switch in the volume control so I have some hope I can fix this one single issue it has and sell it to somebody who wants something basic and low power from the era. It does sound pleasing. That'll likely be my first project to tackle after dealing with medical complications for the past 6 months. Then get into my radios again.
I had a compressor lock up on my Oldsmobile. I flushed the entire system out with brake clean, new compressor, and new accumulator. The condenser was the older tube and fin style so it could be flushed. I ended up using PAG 150 oil and duster spray which is R152a. It blows ice cold! The R152a runs at a lower head pressure the R134a so it will be easier on the compressor.
That useage of duster spray in car A/C is probably why my local Lowes is always out of stock of duster spray, and the containers keep getting smaller and smaller and more and more expensive😠
@@eDoc2020 - Ha ha, you're probably right. And probably shoplifted🫳. That's why they're always out of stock - if units don't scan through the register, the computer doesn't know to order replenishments.😠
Up here in Canada in automotive box stores and other stores and maybe in the US also. You can buy drop in refrigerant called 12a. It’s Butane…. So have at it lol
Yep, HC-12a, propane and isobutane blend. That stuff is so good it will freeze you out and I use it any time I need to work on AC on one of my vehicles.
Richer Sounds in the UK imported these Sherwood components, and tried to make out they were a premium US brand... without telling us that Inkel of Korea had owned them for years and their products were equivalent to entry-level Japanese at best. Not badly made though.
Interesting receiver! Good idea on the power switch. I wonder if a 194 auto universal socket would have worked for the dial light. What LEDs did you use? enjoyed the AC compressor teardown and the butane refrigerant idea. they wont let us have R134 anymore in Washington. BTW, my 1994 Ranger pickup has 150K miles, all original AC components with R12 still, and will freeze your knuckles off. You are right about the water pumps also. Mine just went out for real in December, but lasted 30 years and 150K. I'm still on the original alternator also. I plan to kit it when it breaks. The 1234YF refrigerant in my 2015 Dodge dart keeps leaking out, and even when full, it is not efficient. I also have a 2013 Chev Impala with R134, and its holding its own. Regarding your Ford, man I hear you! The vehicle market is so crazy right now because nobody knows where things are going. Dodge/Stellantis wants us to think they have things figured out with the hot electric muscle car. Looks pretty, but I'll bet they have few takers. They are also hedging their bets with the straight six gas engine. Ford and GM are continuing to update the gas motors, AND develop electric, but both are losing money on electric, and the stock prices reflect that.
The FCC requires the public file be on their site and kept up to date. Go to any fcc regulated company's website and you will find the public file posted. The public file will contain incidents where the regulations were not followed. Like mistakes in the closed captions systems for TV.
Subscribed to your channel, Andrew from Russia, i'll hope you will learn how to repair Soviet receivers in right way, they can do more than they seems. At least I can get the most out of them, I know how to set them up correctly
Now there's a textbook example of galling on that wobble plate. I bet the Subcooling and Superheat aren't in spec with a clogged evaperator coil. Thermodynamics experiment. And smooth flowing electricity in a bypassed switch! Cool
You'll find youtube viewers love A/C compressor autopsies. SUGGESTION: could you please take a messed up one that still turns and feed it bad stuff and LOADS of power til it grenades completely? You just might get some sounds and other carnage that are hard to forget. I've enjoyed various compressor videos since 2011. R.I.P. Aussie50!!😑
2:30 I'm certain you are fully qualified to service and repair Hi-Fi. There are gurus who have spent decades servicing this type of equipment. I will never have their expertise. They can't fix everything under the sun so we are free to do what we wish. We will always tip our cap to the true experts.
Your air intake can be modified to I assume metal dryer/heating hose... That Sherwood receiver is unique with both analog and digital tuning. The burnt resister on the one output side should be replaced. Speakers in cabinets or at least attached to a board will sound much better especially on the bass end.
Best of luck on finding an intake hose for that 4.0. You can find them for the Vulcan 3.0 engines all day long but not for the four. Having three vehicles in our Fleet with that same engine, you think that some company would make an aftermarket replacement, but no one does.
I just found out that KJLH is a station in LA which is urban AC, just like WBLS did in New York City. Here in New York, WBLS is on 107.5 and it’s also urban AC like KJLH did.
I see that *wonderful* asbestos in the compressor clutch. "I Just Wanna Stop" came out in 1976, around the time of the Montreal Olympics, when decathlete he-man *Bruce* Jenner figured prominently in that era.
I am getting a little old now and my memory banks seem to be failing a bit, but I believe I saw a video on youtube years ago where a dude was making engines out of old air conditioner pumps. Perhaps that may be a fun project to use this with>
Hey hey now. Be nice to my console tube stereo, man! I'm winding power and output transformers right now for a new tube amp to go in mine. PP EL-84 to replace the SE 7868 amp that was in it. Yeah, they did kinda tend to be low-end, huh? The stock amp is very distortion heavy. Tiny output transformers too. I love that styling though, before they got super cheap in the late 60's and onward at least.
7:00 High impedance isnt a problem on solid state amps, only on tubes where it melts the screen grid because the plate voltage dips too low without a load
That set has some good stuff in it despite it being one of the last decent sets Sherwood made, shielded transformer and a linear PSU makes for better audio, the vacuum fluorescent displays look far nicer to look at than OLED. You can put together a good HiFi with 80's kit that will run rings round the 'optimised' blue light crap made today. Ps Try self amalgamating tape on the intake, rubber and flexible.
That SW was common & off the shelf. Often part of the funcion SW & went a lot. Sold Sherwood about this time. Not that bad. Put it at the bottom of mid priced stereos. LFOD !
You’re triggering me with memories of my trusty old 95 Explorer! I put 350,000 miles on it. A/c was flawless and never had to do anything to it. Transmission was the big weakness, otherwise I’d probably still be driving it.
Hi Shang, awesome videos and I love the cynicism sprinkled about. It's a fine line between a pessimist and a realist! I am 64 and love tube type electronics, including TVs. I don't know anything near what you know about them so I learn something on every video. As an aside, I own a 2004 GMC Sierra 1500 that I bought new and it now has just over 200k miles on it. Not to jinx myself but it has the original A/C compressor and it still works! I don't know who makes them these days but it looks very similar to yours. The good vehicle A/C systems were the '60s and '70s Frigidaire (G.M.) 'A' compressor-based, which really kicked ass! Good luck with your truck... I'm assuming it's a Ranger; they are around but bring the bucks if you find a good used one. DD
as a Sunday mechanic in Berkeley was faced with standing on your neck and fixing their cars while they wait, and get in your way~ was trading a couple of hits of weed to come up with the giant wrench needed for a VW bug~
I always wonder if that much dust on circuit boards might be somehow, or somewhat, conductive...leaking current between unrelated, unconnected components, like between pins of an IC...like if the dust gets damp from high humidity...
I watched this a day before commenting, but couldn't shake the itch of having to post....The mix of electronics and mechanical repair/diagnosis in this video reminds me of how much there is to learn out there, how much I still personally have to learn, and how individuals like Shango, should be role models/inspiration to us all to learn as much as we can about everything. Shango, your posts about laying hardwood flooring, repairing old mowers a/c compressors, old homes, old mines, music, and the plethora of electronics has been nothing short of inspiring. Your satirical commentary about politics and society in general prove how well rounded of an individual you are. Thank you for taking the time to post your adventures, and expertise with us! The mix of content is fascinating and appreciated.
Amen to that , amazing all the different things he can do . Smart dude .
Wow! That compressor was 100x more interesting than that hifi.
AWESOME VIDEO!!
I worked on a Kenwood receiver that had the same power switch and it was doing the exact same thing. I took it apart, cleaned the contacts and bent them a little to make better contacta and it's been working for years since.
Interesting observation, I was trying to find the manufacture as it seems to similar to Trio, Kenwood and Technics in the Amp section. I think it was made in Korea but may be wrong.
@@stephensams709 This was actually a Sherwood receiver - or are they equivalent? Anyway, good on you Stephen, fixin up & cleaning up the power switch! Good job! I just wish Shango would have done the same, even if he eventually ended up bypassing it anyway.
I just came to post that those toggle switches look darn near identical to the toggle switches on my Kenwood KR 9600 receiver
My fathers Kenwood KR-3090 suffered a similar issue tho it went unnoticed for many years. He used it in the garage fairly close to a fluorescent fixture running 4 8' T12 bulbs. He always blamed those lights for the excess noise on the receiver, tried every trick in the book to reduce the interference & the whole time the problem was actually the switch intermittently arcing. Luckily the switch had two sets of internal contacts and the 3090 only used one side/set so I just swapped them around. That was fortunate as the contacts that were previously hooked up were thoroughly twinkoquirkulated.
Had it been my own tuner device, I'd have done exactly the same thing.
Fully understand Shango's reluctance to go down that path, considering how litigious the USA is & especially California.
Does look a lot like a Sherwood design
Your vehicle-related videos are always appreciated.
It’s like survivalist repair
@@nyki7fykxtjxyi If you are here you know what's up. People like shango066 will help us through the wonderful reset.
I enjoyed the conpressor strip down 🎉
I've only pulled one apart, but it was very similar.
That "swash plate" design is how most average gas pressure washer pumps work too, but they typically only have 3 pistons.
The straight butane refrigerant is known as R600 and works quite well as an R134a replacement.
R134a is better
HC 12 was used in big trucks,just propane when R 12 was phased out..The hc was short for hydrocarbon.
@@johnchildress6717 HC-12a is a Propane/Isobutane mix. HC-22a is straight propane.
HC-12a is supposed to be a drop in replacement for R12 and R134a. HC-22a is supposed to be a drop in replacement for R22 in commercial applications.
When filled into a 134a system does the butane still pull the PAG oil with it? I was told it only worked with the R12 mineral compressor oil. Maybe Shango has to flush the system and add mineral oil, then the compressor wont run dry...
@@blitzroehre1807 R600a calls for mineral oil but shouldn't be reactive to PAG oil, so one could likely get away with either.
The definition of "analigital" HiFi right here!
This made me nostalgic for my old '67, according to Sams, S-8000 III FM tuner/amp which I bought used from an "antique" store back in the late '80s. I kept it going until the other output transformer failed back in 2014. Best FM tuner (especially) and sound system I ever owned ! I still have the remains of it and would love to have it back in prime condition again. The 7868 outputs were tempermental as He)) to bias but fiercely superb sound and volume. Even without the expense of the output transformers, it would be expensive to recap it electrolytically and retube the output stage but I'm tempted again and again. The main problem is the low profile design of the chassis and case. The multicell filters can't stand any higher than 2.5" max and hardly any room to use individual units. Sherwood really crowded the house on that model. The replacements I had installed about 4 years earlier all got repurposed after it finally died so it would really be a build now to resurrect. Then there's the replacement output transformers dimensions to consider as well...plus the overall cost. But, this video really set me to missing it something terrible. I've never been as happy with the equipment I've been using since.
Good luck on the AC 🧊. It's that time of year again 🥵.
It is not a good Saturday without a shango066 video
so yippie!!
Always enjoy the commentary.
Never knew about compressors for AC system great job on sharing this another great Saturday Morning with Shango.
My dad had one of these tuners that had the signal strength and the same tuning arrows. He had it piped into an Olson AM-744 amp and some realistic 15" woofers and horns with a custom cabinet that he built. He had 2 turntables, an EQ, dual tape deck, and a state of the art of its time CD player. He had this setup as a backup and gave it to me to use when he upgraded. The thing blasted. I learned how to set up audio equipment on this setup and had it blasting. Although it was maybe 50 watts per channel, it sounded way higher. Eventually we were forced to move up north 300 miles away and had left it all at the house we lost. Found out that most of the equipment was collectible and worth a lot of money. He bought most of it at a pawn shop and went to radio shack to get the speakers and other equipment to make his DJ business function.
Replaced many of those power switches in the 70;s & 80's at Radio Shack. Had to buy the complete switch assembly as the power switch wasn't available by itself. Neat compressor teardown.
That receiver looks very much like a MCS Series (JC Penny house brand) from the same era. The only difference was the lack of a VFD.
Modern cars have too much electronic junk in them. I'd go vintage on vehicles, but parts for old vehicles are nearly impossible to find. I had a 1976 LTD that had the 351M and FMX transmission. Still was going until I started having problems keeping it on the road straight. It was a hand full to drive. Now, I have a 2008 Jeep JK that is otherwise a decent vehicle, but the transmission has issues and will get stuck in 2nd gear when hot.
The font on those controls is identical to my 1976 vintage Pioneer H-2000 AM-FM 8-Track with Phono jack. Probably same manufacturer. Mine has dedicated flip-up power switch. Still works today😊
I think all these big companies like Kenwood, Pioneer etc. Had all their knobs and face-plates made and sourced by the same companies
Great video Shango!.
Found them both deeply interesting, as I do all your videos & always learn something new or different as the principles can be applied to far more than what you just showcase, so thanks heaps for all that you do in sharing these videos with us!.
The old 1980s tuners are great, as long as the vacuum fluorescent display is OK i.e. Panasonic DR-28/RF2800, DR-31/RF3100 etc.
Facing similar issues with my own car though mine is more the crankshaft pulley/harmonic balancer bolt & woodruff key which were surprisingly very difficult to locate) & eventually had to order parts from Japan which actually fitted as the 17mm crankshaft pulley bolt wasn't available locally despite extensive searches, so took a punt & banked on the fact it was a Toyota 4A-FE motor & came up a winner.
Many times, car manufacturers use the same parts on different engines & make/models & you may get lucky & one like Ford, guaranteed would have parts commonality across many models to save production costs.
Have similar sentiments in buying a new car as Australia is having a similar mentality to California when it comes to EV, mind you it makes little difference anyway when the rest of the world is building even more coal power stations so essentially we're trying to make a hole in a pond of water.
Nephew is a mechanic who works in a busy workshop as his job & he tells me most of the new car engines are basically junk after 100000km (62137 miles).
What I fear with EVs is they'll essentially be all "black box" electronic modules i.e. John Deere anti right to repair on steroids.
I feel they're implementing ill thought out EV technology which works great for inner city with good power infrastructure, and if it was so great & cheap then why isn't Africa & Asia moving to EVs on masse.
Households argue over mobile phone battery charge, can one only dare imagine this on a grand scale with EVs!
I replaced one of those compressors on a friends mustang. It failed when the car only had 45k miles on it. As you said,the only positive thing is that they are very easy to replace. I enjoy your automotive and other videos as well.
98 Ford van with the 4.2 l V6 Essex engine is easy too
@coreybabcock2023 Don't know anything about that. I don't own or drive anything newer than the 60's. Just know that my friends mustang compressor failed really early
i still have my system from 1980 itt hifi it still plays fine the record player works tape player also works
The dial, digital readout and power meters as well as the parts inside of it look like a clone of a Sansui G-4700. If the digital readout's IC takes a dump, it is unobtainable. The 4700 is rated at 50 wpc. Judging by the transistor complement, I'd expect similar performance from this Sherwood. It sounds like it has protection circuitry unlike the 4700. Definitely a plus. I would have checked the DC offset while I had it apart. Plenty of real estate on that back panel for a toggle switch, but I get it if the owner doesn't want it molested. Enjoy your channel. Highlight of my Saturdays. ✌️
Sure appreciate the variety of content. Great stuff!
Thanks for taking apart Compressor, ... really interesting inside; Now i know.
Thank you very much for the heads up on KJLH, it's difficult to find good urban formats such as this. 😃👍
An aside to your repairs, I appreciate your knowledge of the local bandplan. Listening to KJLH, some cool urban "oldies". They're playing a string of Luther Vandross as today would have been his 73rd birthday.
I love your latest video. Keep up the great work.
Cool device to pierce the butane canister.
I'm also going to go with Pioneer as the manufacturer. The controls, the fonts, the layout. A pretty nice receiver from the start of the 80s.
very interesting, I've never seen a compressor like this from the inside 👍
A fun fact about teflon. I have parrots and if you overheat teflon (and it doesn't take much to do that, say 500 degrees), it will off gas something that will make every bird in your house drop dead. In the coal mines, when your parakeet drops dead its a sign that you need to evacuate because the air's either not there or heavily contaminated with something you don't want to be breathing. I switched out all my nonstick stuff with cast iron because of the birds, and you know what? I don't miss it.
Your Explorer has done you well, specially for it’s age. mine is slightly newer then your one as its a 2006 & I've only had to replace the starter motor & alternator. But now it’s suffering from a blocked catalytic convertor & worn front shocks! It’s got 305,000 km‘s on it, so can’t complain too much about the old car, i don’t hardly drive it now as i’ve got my 2006 Beetle so the kids use the Explorer/Territory to learn to drive for their driving hours on their learners licence.
How interesting about the power switch inducing noise; I've never seen that before. That's a solid diagnosis. As an aside, I never liked solid state hifi amps like these; they're just too temperamental. Dozens of transistors to fail, and if it's the driver transistor that shorts, you get the added "benefit" of it taking out the output transistors with it
I love AC work
Sherwood S-8400CP 40wpc, $360 MSRP new in 80-81.
I use the capacitor wizard for checking out the power switches, it does a great job at reading low ohms.
Will be using the capacitor wizard for tracing out a short in the regulated power supply in a Panasonic boom box. Much better than cutting traces.
One thing you could do with that intake to repair it is to get some silicone rubber hoses and make up your own intake tubing but you might have to drill a hole or two for the smaller hoses that come from the intake.
If it was my truck i would have used R152 from the Air duster cans you can buy from the store, Very close to R134A you use about 10% less then R134A. The R600 that is a also a very good Idea. I bet you could also get away with propain for your BBQ AKA Dirty R290 LOL . Cool video. Suction side should be beer can cold, liquid line should be whiskey bottle warm. 😁
First of all, propane is cheaper and more convenient than butane. I'm not sure if it works as good as a refrigerant, but I've heard it works well. (use at own risk). Also, go to a place that sells air brake alcohol for trucks and use that with compressed air and blow it though BACKWARDS with the lines removed. Put a clean white bucket to catch all of the gray matter and flush until it disappears. The alcohol doesn't mix with the oil, BUT it evaporates and air brake alcohol is anhydrous, unlike isopropyl rubbing alcohol. It also was never embargoed along with TP on St. Patrick's day 2020. Those vacuum guns sold at Harbor Freight that suck up solvent and spray it out the end that hook to your air compressor work well. Treat your accumulator (or receiver dryer) like it's an oil filter. It has basically like a "Do Not Eat" bag like what comes in new shoes with little beads in it. This "filter" will hold onto about 3-4 ounces of oil in it that will NEVER leave that fun little bag of uneatable goodness in it, so don't be afraid to always add EXTRA oil when changing this. I've had a lot of people argue this with me, but I've changed A LOT of compressors in my 3 decades in a past life working on this crap.
On the stereo: I love the back l;it display. I wish they would bring back VFD displays. I've never seem a VFD used with a dial pointer as well, so really cool unit! On a side note, I have a 1950's Challenger 2x 6V6 amp that has the power on the treble! I now leave it and switch it off/on with a power strip.
Interesting to see the teardown of the compressor. I've replaced a few, but never actually took one apart, surprisngly. Seeing how that swash plate piston interface in this design is, can't say I like it. The balls inside each piston look like they just sit in a pocket, which if so, are like a bushing. Wear is guaranteed, and low lubricant absolutely detrimental. That is a lot of surface area that ball rolls against. Seized up, and friction welded. I can think of a round bearing+roller pin arrangement the ball could sit in that may be better, but that would be some super precision machining. Still interesting to see though, as was the other swash designs I just saw doing a search.
The first R12 replacement were just a mixture of propane and nitrogen. The nitrogen was just fill gas. Propane boils colder than R12. You had to run 45 or more suction pressure to keep from freezing the evaporator.
21:49 Good for cruisin the Boulevards!
cleaned one of those switches on a pioneer SX-550 & it fixed the issue but then later the power amplifier twinkocrwerkulated transistor popcorn machine....(Unrelated to the switch problem)
I checked the video again and confirmed its
shango066. wow shango did it finally.... a receiver.
Great video
You know your local bandspread. Always thoroughly entertaining and informative as usual. ...or is that informative and entertaining?
Flex seal your intake. That stuff works great.
The display and driver held up well anyway.
Wow, welded balls! That must have gotten hot. Excellent bearing failure! Thank You.
I flushed the air conditioning system in my Chevy truck when I replaced the compressor and accumulator / dryer on the system. It really did a good job on getting the nasty stuff out. Maybe you could try that....
Get yourself a used early 90's Chevy Cheyenne WT, might need some minor repairs but those things will run forever. Easy to work on too.
Sherwood always had power switches mounted to the volume or tone switch. In the mid seventies, I purchased a model 7010
receiver brand new at a good price. It sounded great, especially on Bohemian Rhapsody. The bias was critical on the output transistors as I remember. They're sleeper receivers.
Even as a repair tech here in the Uk I didnt see all the digital fluorescent, led and slide rule displays on a tuner amp, the nearest was waltham who did something like this but the fluorescent display was just a clock.
I'd say the digital frequency display is a frequency counter, as on Am it tuned in 1kc steps, if I'm right in the Us synthesised Am tuners tune in 10kc steps, here its 9 kc steps.
Yes, its a frequency counter, you just have to subtract IF frequency.
Very good vedio ,I enjoyed
I've had a few 1980's Sherwood branded receivers come through my workbench in recent times. They seemed to be fairly decent. They did use a lot of STK amps later on during the 1980's. However they became to offer audio equipment in your choice of silver or black... people assume the black faced (still aluminum) is BPC and nobody wants it. Now if I had a dollar for each one of those Alps power switches.. I take them apart and polish the contacts. Not sure why companies did that switch on the speaker selector on models with a speaker relay, but many Pioneer and Realistic receivers had it. With the low models that did not have a speaker relay, it removed the amp from the speakers to eliminate power down noises.
looks like visonik....thx for the vid
Yeah I never really understood the reasoning of putting the power switch into the tone control and the likes. Volume control makes the most sense, you're almost always going to set a desired volume when powering up a device. Anything else for me takes enough mental energy each time to be annoying. I guess some manufacturers just wanted to be "different" but it sucks for us tinkerers because those controls are now long extinct and you can't get replacements. Even a good volume pot/power switch combo can be tough.
Ironically the one receiver I have with a similar issue is a Sherwood as well. It's a Sherwood S-7110. But the power switch failed into the on position on mine, so it bypassed itself. This model does fortunately have the switch in the volume control so I have some hope I can fix this one single issue it has and sell it to somebody who wants something basic and low power from the era. It does sound pleasing.
That'll likely be my first project to tackle after dealing with medical complications for the past 6 months. Then get into my radios again.
Love it! Please do more receivers. I could even send you a few..
Propane is awesome for refrigerant.
I had a compressor lock up on my Oldsmobile. I flushed the entire system out with brake clean, new compressor, and new accumulator. The condenser was the older tube and fin style so it could be flushed. I ended up using PAG 150 oil and duster spray which is R152a. It blows ice cold! The R152a runs at a lower head pressure the R134a so it will be easier on the compressor.
That useage of duster spray in car A/C is probably why my local Lowes is always out of stock of duster spray, and the containers keep getting smaller and smaller and more and more expensive😠
@@cmans79tr7 I'm pretty sure people use the duster spray to get high. That's going to be a much more common off-label use than AC recharging.
@@eDoc2020 - Ha ha, you're probably right. And probably shoplifted🫳. That's why they're always out of stock - if units don't scan through the register, the computer doesn't know to order replenishments.😠
It is great the you went out of your lane! Do more receivers, if you like. Hell, take on a classic receiver. This was a fun change-up.
Hell ya your vehicle do what you want I do the same thing to my 98 Ford e250 I live in
I like 2200k leds in my old radio equipment. It looks very close to stock bulbs
Up here in Canada in automotive box stores and other stores and maybe in the US also. You can buy drop in refrigerant called 12a. It’s Butane…. So have at it lol
Yep, HC-12a, propane and isobutane blend. That stuff is so good it will freeze you out and I use it any time I need to work on AC on one of my vehicles.
Richer Sounds in the UK imported these Sherwood components, and tried to make out they were a premium US brand... without telling us that Inkel of Korea had owned them for years and their products were equivalent to entry-level Japanese at best. Not badly made though.
Interesting receiver! Good idea on the power switch. I wonder if a 194 auto universal socket would have worked for the dial light. What LEDs did you use?
enjoyed the AC compressor teardown and the butane refrigerant idea. they wont let us have R134 anymore in Washington. BTW, my 1994 Ranger pickup has 150K miles, all original AC components with R12 still, and will freeze your knuckles off. You are right about the water pumps also. Mine just went out for real in December, but lasted 30 years and 150K. I'm still on the original alternator also. I plan to kit it when it breaks. The 1234YF refrigerant in my 2015 Dodge dart keeps leaking out, and even when full, it is not efficient. I also have a 2013 Chev Impala with R134, and its holding its own.
Regarding your Ford, man I hear you! The vehicle market is so crazy right now because nobody knows where things are going. Dodge/Stellantis wants us to think they have things figured out with the hot electric muscle car. Looks pretty, but I'll bet they have few takers. They are also hedging their bets with the straight six gas engine. Ford and GM are continuing to update the gas motors, AND develop electric, but both are losing money on electric, and the stock prices reflect that.
The FCC requires the public file be on their site and kept up to date. Go to any fcc regulated company's website and you will find the public file posted. The public file will contain incidents where the regulations were not followed. Like mistakes in the closed captions systems for TV.
You might want to check out Spectra Premium A/C Compressor. They last a long time and work really well. Brand new.
Subscribed to your channel, Andrew from Russia, i'll hope you will learn how to repair Soviet receivers in right way, they can do more than they seems. At least I can get the most out of them, I know how to set them up correctly
Now there's a textbook example of galling on that wobble plate. I bet the Subcooling and Superheat aren't in spec with a clogged evaperator coil. Thermodynamics experiment. And smooth flowing electricity in a bypassed switch! Cool
You'll find youtube viewers love A/C compressor autopsies. SUGGESTION: could you please take a messed up one that still turns and feed it bad stuff and LOADS of power til it grenades completely? You just might get some sounds and other carnage that are hard to forget. I've enjoyed various compressor videos since 2011. R.I.P. Aussie50!!😑
I have the same thing on a technics sa450 and just deleted the power switch and drilled one in the side
2:30 I'm certain you are fully qualified to service and repair Hi-Fi. There are gurus who have spent decades servicing this type of equipment. I will never have their expertise. They can't fix everything under the sun so we are free to do what we wish. We will always tip our cap to the true experts.
Your air intake can be modified to I assume metal dryer/heating hose... That Sherwood receiver is unique with both analog and digital tuning. The burnt resister on the one output side should be replaced. Speakers in cabinets or at least attached to a board will sound much better especially on the bass end.
Best of luck on finding an intake hose for that 4.0. You can find them for the Vulcan 3.0 engines all day long but not for the four. Having three vehicles in our Fleet with that same engine, you think that some company would make an aftermarket replacement, but no one does.
exactly
The speaker/power switch is a Sansui thing.
I just found out that KJLH is a station in LA which is urban AC, just like WBLS did in New York City. Here in New York, WBLS is on 107.5 and it’s also urban AC like KJLH did.
I see that *wonderful* asbestos in the compressor clutch. "I Just Wanna Stop" came out in 1976, around the time of the Montreal Olympics, when decathlete he-man *Bruce* Jenner figured prominently in that era.
I'd own that in a heartbeat though. Sherwoodz old ones did use a switch in the volume control they are known to be hard to find as most were junk
You gave us 2 a/cs adult contemporary and air conditioning
decent sounding FM, the guy could stick RCA plugs in LINE OUT to a more poweful amp
Sometimes we forget you're also a car guy
28:28 Cool! Now I know what to name my new metal band! 😆
We have lkq in the Baltimore DC area
Interesting how the internals of that Sherwood look Very similar to a Technics receiver I have from the same era
I am getting a little old now and my memory banks seem to be failing a bit, but I believe I saw a video on youtube years ago where a dude was making engines out of old air conditioner pumps. Perhaps that may be a fun project to use this with>
Loved the whole Video Mate, Thank You !
Butane, mmm, very interesting LOL
Hey hey now. Be nice to my console tube stereo, man! I'm winding power and output transformers right now for a new tube amp to go in mine. PP EL-84 to replace the SE 7868 amp that was in it. Yeah, they did kinda tend to be low-end, huh? The stock amp is very distortion heavy. Tiny output transformers too. I love that styling though, before they got super cheap in the late 60's and onward at least.
7:00 High impedance isnt a problem on solid state amps, only on tubes where it melts the screen grid because the plate voltage dips too low without a load
That set has some good stuff in it despite it being one of the last decent sets Sherwood made, shielded transformer and a linear PSU makes for better audio, the vacuum fluorescent displays look far nicer to look at than OLED. You can put together a good HiFi with 80's kit that will run rings round the 'optimised' blue light crap made today. Ps Try self amalgamating tape on the intake, rubber and flexible.
That SW was common & off the shelf. Often part of the funcion SW & went a lot.
Sold Sherwood about this time. Not that bad. Put it at the bottom of mid priced
stereos.
LFOD !
You’re triggering me with memories of my trusty old 95 Explorer! I put 350,000 miles on it. A/c was flawless and never had to do anything to it. Transmission was the big weakness, otherwise I’d probably still be driving it.
Thanks Shango..
Hi Shang, awesome videos and I love the cynicism sprinkled about. It's a fine line between a pessimist and a realist! I am 64 and love tube type electronics, including TVs. I don't know anything near what you know about them so I learn something on every video.
As an aside, I own a 2004 GMC Sierra 1500 that I bought new and it now has just over 200k miles on it. Not to jinx myself but it has the original A/C compressor and it still works! I don't know who makes them these days but it looks very similar to yours. The good vehicle A/C systems were the '60s and '70s Frigidaire (G.M.) 'A' compressor-based, which really kicked ass! Good luck with your truck... I'm assuming it's a Ranger; they are around but bring the bucks if you find a good used one.
DD
I was certain due to it's vintage that there would be an STK amplifier module inside color me surprised.
Shango make cold air with fire juice. No piss off Shango.
as a Sunday mechanic in Berkeley was faced with standing on your neck and fixing their cars while they wait, and get in your way~ was trading a couple of hits of weed to come up with the giant wrench needed for a VW bug~
I repair receivers and I agree I hate speaker/power switch combos.
i like VFD clocks
thats when they bulit good stuff
You are in your own lane. It's called electronics.
I'm down with skyrizie
I always wonder if that much dust on circuit boards might be somehow, or somewhat, conductive...leaking current between unrelated, unconnected components, like between pins of an IC...like if the dust gets damp from high humidity...
I'm curious how the AC works with butane. Like, how cold is the air coming out of the vents compared to Freon? Do you start having icing problems etc.