I typed: cleaning volume, and autocompleted cleaning volume pots on stereo amplifier. Within 5 seconds I am watching a guy servicing my tuner circa 1978. What an age we live in.
I'm about to clean up my old SX-880. The switches need cleaning, so it was helpful to see the spots to spray the DeOxit into. Also, I had no idea that the ganged caps in the tuner needed to be cleaned too! Very helpful! Thanks much!
This was great to watch. Have an SX-580 I want to work on and this provides me with a lot of what I need to understand how to go about things. THANK YOU!!!
I just repaired my first stereo, a vintage Realistic STA-110. Got to say, thanks for posting this. You answered a lot of dumb questions i had but never asked
This was a great video for me because I am thinking about purchasing a Pioneer 580 that I found for a pretty decent price. Thank you always a pleasure watching your videos.
Jordan, great video! Just purchased a Pioneer SX-580 for a decent price. Look to hold as a vintage collectible and place in my den for listening pleasure. Now I know what to service in order to keep the unit in shape. Will follow your posts religiously.
Thanks for the presentation. I have an Akai AM U03 which also uses 'power packs', and I just purchased a digital radio, with bluetooth. It has external removeable links from the tone controls (including volume) to the power stage, and have joined the line output from the digital radio directly to the power stage, and volume, tuning controlled remotely.. At some point, I'll clean up the switches and pot's using the 'extended tube' method you show..
On the deoxit double tube. I was rescreening my windows when the bulb lit up. A short length of .185 or slightly larger window screen spline, slipped over the red tube, works great as a tiny spray hose for out of the reach locations.
It's a shame that as good as the deoxit sprays are that they not only refuse to make it easy to use for what it is intended but have also made it even harder with the oversized unflexible hose and what they send with the bottle won't even fit into the spray nozzle. They need one that is super long, super flexible (near limp) and you could cut it to whatever length you want or make 2 different size hoses from the one piece. Maybe you have some pointers?
Hi Jordan. Excellent video. I think I picked my 580 up at an auction a few years ago. One day it quit. Found a loose connection on the lamp fuse. I don`t know why whole thing quit. Maybe not. Then the dial string came loose. Could`t restring, so put away. The other day decided to take a look. Thought of you tube. Wala! There you were. Followed string configuration. Beautiful! Works perfect. Paying attention to the tuner, I also noticed a 1/4 inch end play on the drum shaft. The play is in the 1/8 inch part of the shaft, splined into the small drive gear, which drives the tuner gear. I may try to see if I can reduce that play, since too far out, can rub cabinet inside wall. Just thought I`d mention it. Will always keep this radio, and just like to maintain in good order. Thanks for help.
Hi Jordan,I just subbed to your channel.I'm a gamer, musician and now an audiophile! Lol I owned a 580 new in 1979 but lost it in a divorce settlement years ago. i have missed it ever since! I found one recently on Ebay and checked it out and they cleaned the potentiometers recently with Deoxit and tested it. It says to be in great working order. It's supposed to be her by the June 13th. I can't wait till it arrives!Great video's like this equals many SUB'S! Keep up the stellar work!
Always had a spot in my heart for BTO. A few things about your SX- 580 receiver. It retailed for about $250 in 1979. Was roughly 18"x13"x5" and weighed 19lbs. Power is 20WPC (not killer but ok for efficient speakers). THD and IM are 0.3% (not good but acceptable for 1979) and signal/noise ratio of 73db phono / 90db line. This unit did have a good FM front end for FM reception. Also a tape monitor and an AUX input. Where the SX- 580 fails is when compared to the SX- 550 and SX- 535. You really don't need power meters on a 20watt receiver, better to have two tuning meters and where the SX- 580 has one tape loop both the 535 and 550 had TWO (with one way dubbing). Very handy for copying tapes. Plus these receivers had an AUX input too! Pioneer did have a great budget receiver in the SX- 450 and SX- 434 and if you check ebay you'll see good SX- 450's selling for $100-$150, you'll see SX- 434's for $100+. I've seen (serviced) SX- 525's for $150 and SX- 535's for $295!! The SX- 550 also runs in the $150 and up range. The SX- 580 might SPEC. OUT better but the other Pioneers are more popular. Go figure? The 580 IS a good receiver, check out the "CLASSIC RECEIVERS" site. Me? I always liked the "Pioneer Blue" look of the SX- 434 series. It was soooo 1970's! I still use an SX- 434 in my kitchen system. It powers a Nakamichi BX-1 cassette deck and Boston Acoustics A- 40 speakers. Remember now, the SX- 434 is from 1974 thru 1976. That's about 41 years ago. Folks, that is QUALITY stuff!
I have a 550 and a410.510 amp I love the way it sounds.only wish is that it a+b. Out put the 550 needs new lights do you have any idea where to begin to get them
Thanks to you and your video, I brought my SX-580 back to life. It was dead and I was going to toss it when I came across your video. The only thing wrong was that little 33 ohm fusible resistor was open. I replaced it and my SX-580 is working like new again. Thank you!
You're welcome John. Since I've made this video I've discovered another resistor that goes open to check for. I don't remember the value, but if looking from the rear with the top off it's to the left of one of the main power supply capacitors, burried under some wire and a large rectangular power resistor. This should be replaced with a .5w equivalent. When it opens both channels offset -30vdc, which is harmful to your speakers
Been binge watching your videos, good job making a rather dry subject very watchable and entertaining, wish you weren't 3000 miles away, I have no shortage of vintage gear I hoard that needs work, hoping to learn but miles behind in my knowledge/experience than one such as yourself, thanks
Thank you for this knowledge! My Father passed away last year and my mom gave me his SX-780 with a pair of Sansui SP-X8000’s that I grew up with as a kid. As an only child and latch key kid I got spend a lot of time alone playing music. They are still in great condition but old I’m hoping a cleaning like this will let me enjoy them again.
I've used an airbrush with alclad chrome model paint to restore the plastic push button knobs. It's 2 part paint. Black base coat, chrome top coat. They will look like new. A little work, but if you have a nice unit with corroded buttons, it will finish the restore.
This was an ebay find I purchased in gorgeous restored condition. It was a replacement for Marantz 2230 which I loved a little too much. The Pioneer has a rather "neutral" sound while the Marantz has that famous warm tube-like tone. While "entry-level " this Pioneer (as well as the Marantz), are very serious players. Definitely very real equipment.
I stumbled on your videos today and can't stop watching. Very good information thanks a lot. One question could you make a video or description of your setup with scoop, power load (also the one with the lamp, signal generator?
I use fantastic cleaner spray to clean the faceplate and those pesky buttons. Then I put the volume and tone controls in a plastic margarine container with dawn soap and water overnight and then shake it a few times and rinse thoroughly. Looks brand new.
Good knowledgeable video, good narrator skills I have a lot of respect for people who revived antiquated electronics instead of trowing to landfills , but the bench I'm a retired tv tech never seen a bench so messy even when I was repairing 5 units at the times how can you find a lost screw in this chaos ,just a nice clean up with a layer of left over paint would do the trick your scope look like is was un-buried form the dirt your making a video that the whole planet is seeing with your name on !!One thing for sure you cant work SMT on a bench like this were the resistor and cap are small like a grain of salt you drop one on a bench like this and you got to find another one ,people working on SMT from home have a station like a medical operating room !
This series, at least the higher power versions, were among the least reliable of any Pioneer receivers. The voltage regulators ran so hot they essentially unsoldered themselves from the PCB. They also clipped really dirty and were famous for frying tweeters. This was when Pioneer put all the money into the cosmetics and cut ever corner on the internals but they still sold well because they looked nice.
I just got one yesterday. The guy said it was playing. Brought home and I attach one speaker, and there is a quite loud hum. Adjusting volume does not affect the level of the sound, even turning vol to zero, makes no diffrence. Thanks for the video, I'll try the service hints you mentioned.
Joel Stolarski if hum in both channels, likely a power supply failure (open capacitors) -but if only one channel likely a failure of the stk-0029 power amplifier ic. Check for DC voltage at the speaker tetminals. Should be less than 50 millivolts
Thank you so much. On A Right-no sound, left hums. On B-right no sound, left hums. don't know how to interpret the meter on the humming side. set to 200m and it -1_ _. A right and B right with no hum, the reading fluctuate from 35 to about 41.
Joel Stolarski the meter is reading beyond the 200 millivolts range you have it set to. In any case, the left amplifier ic is bad and needs replacement. The lack of sound in the right may be due to a dirty switch or control, or the supply voltage may be getting pulled down by the bad amplifier ic. Either way it needs fixing
Joel Stolarski it's not a current production part from any major manufacturer. The ones on eBay are hit or miss. Some work fine, others are counterfeit - either they don't work properly and distort, or not at all. If you're electronics savy, you can build one from scratch. There's schematics out there for a diy stk-0029. If you plan on keeping it, it's worth the effort to build one
I think it's just the volume control itself that accounts for the slight difference in output level of the two channels. Been servicing as you have for over 30 years. For test purposes I just re-adjust the balance control as necessary to balance the channels, or use the invert/add function (plus the balance control) to null it on the scope, then switch the scope back to normal display. I can be anal about the two channels matching while testing power etc. :-)
Agreed, this was a great video thanks! One thing seemed to me is that missing in the video was there a cleaning of the entire inside? It seemed late in video the parts were all clean compared to early in video everything was grungy with lint. How was the whole larger area cleaned? I read below where it appears you used a soft bristle brush and air from an air compressor. The grounding screws is something I would not have thought about. I wonder if deoxit should be used on ground screws ???
Před 8 lety+8
Good job. Good video/presentation at all. You may should service your chair? xD
to polish the plastic knobs...you might try putting a dummy shaft in a hand drill and using a $1 bill as sand paper......light pressure...... the ridges in the engraving might do it.....
For pots you need the green Fader version. It's safe for carbon pots. Do not use the red D5 version, as it will deoxify and destroy the carbon oxide track and you will be forced to replace the pots, eventually.
Excellent video. I'm servicing kenwood kr3090 and 4070 currently. Love vintage audio. Your video covers exactly what's important. How do you clean the boards and components? Just duster or you spray everything down. I'm not a fan of just dousing it all in fluid.
What did you use to clean the inside of the receiver? After you removed the cabinet the inside of the receiver was full of dirt and dust, then magically it was gone. I’m curious what you used to clean it out. Thanks
Now that was a great service video. Thanks much. I just picked up an SX 680, two blown bulbs and the left channel vu meter is non functioning. I had been led to believe it is time to replace the caps even though the unit is working and sounding wonderful, as a preventive maintenance measure. Something about the power packs no longer being available or something. What would you advise, this unit has never been opened for service before.
Hello, I have a quick question. A family member was recently trying to clean a similar Pioneer machine with compressed air, and after doing so realized that the FM completely stopped working and that the AM only worked at high frequencies. He didn't use any sort of liquid lube, just a can of air, but we're wondering if it caused the tuner issue that you mentioned-where its capacitance changed and became unusable. Thanks
+Plat the can of air is technically compressed refrigerant which can contain moisture. It may have been moisture got between the fins, or something was jostled loose. Always clean with a natural bristle brush and blow dust out with a pure air source like a vacuum exhaust or pressure regulated compressor.
HI DO YOU FIX THE PIONEER SX 580 . The receiver worked and then after 5 months rest , it no longer worked . The lights work on the tuning bar .The tuning needle moves but zero watts and no sound from the speakers ?
Jordan, great video! Just wanted to clarify, are there any (electrical) safety precautions if I just want to clean the pots/switches? Also, can I tighten the ground point screws on the bottom panel without any concerns?
Unplug it of course. Avoid getting any deoxit into the power switch or into the tuner. The ground screws can be tightened after removing the bottom panel without concern
Jordan , my Pioneer FM radio reception is a cigar looking thing on the back and works great if I giggle it but horizontally ,no fm reception .What up with that ? Goodwill purchase.
Great info, very informative. I do need some clarification though. I see some other repair techs say never use deoxit on pots, only on switch contacts. Because the deoxit has lube in it that messes up the carbon. You look to be able to use it with no problem. Can you explain? Do you use the deoxit 5, the deoxit gold or which one. Also what is the deoxit part number for the pump can? Thank you.
Tom , deoxit is fine for switches and rotary pots. however some slide pots use a silicone based lube that is necessary for correct operation - which deoxit washes out. for this purpose they have caig faderlube, aka F5. D5 I'd the regular deoxit. D5p is the pump spray
Thanks for the great video! I have an sx-580 that works fine when first turned on. After a few minutes, the radio stops working - both FM and AM. The stereo light and the signal strength meter stop working as well. The amplifier continues to function, I can play music through aux. If I turn the unit off for about 30 minutes, it will repeat the process of the radio working for for a few minutes and stopping again. Any ideas what specific things might be failing? I'm going to follow your advice of re-soldering any connections on the back of the board that look dodgy.
sounds like the 12v regulator is failing. it's job is to supply power to the radio. if there is a hum accompanied with the radio fading out them it's likely a capacitor opening. if no hum, likely the regulator transistor is opening or driver transistor in regulator circuit has lost beta
Thank you! I checked the regulator and found that indeed when the radio fails the emitter on that transistor goes from 12v down to 0v, while the base and collector remain at the proper voltages. Thus I assume the 2sd712 is bad and must be replaced.
You can use this as a baseline for a 1000tw, but it will more than likely need alot of capacitors and replacement transistors for the 2sc458s if it has any
Great video! My Dad finally let me have his sx-1280 and would like to clean it up. Are there any switches or dials (other than the tuner) that I should keep the deoxit away from? The only issue with the unit is the phono button. Under normal conditions, the right channel plays at half the level of the left. When I push the phono button all the way in and hold it, the volume is normal. Is deoxit safe for those buttons? Thanks!
Yes, it is safe. It's best to remove the front panel completely and spray deoxit down where the switch button shafts pertrude from the chassis. You can hold one down while you work the others to prevent them from latching. While you're at it you can clean the front panel and dial glass - which typically gets dusty.
@@JordanPier thanks for getting back to me. I just finished tearing it down and putting it back together. Polished all the knobs and buttons. I found a product to work really well for Cleaning the face. After Windex and magic eraser started erasing the lettering, I tried GE screen cleaner thinking it was stainless cleaner, and it worked beautifully! It removed the grime with ease but none of the lettering. I will disassemble and deoxit when my Amazon delivery arrives. Thanks again!!!
Hi Jordan, i was gifted an sx580 that was working perfectly until a few days ago. Now when I turn it on, the watt meters swing to the right and the speakers start going crazy even if i turn the volume nob slightly. What possibly is the issue? Thank you
I'd stop using it until you can get this resolved. the fuseable resistor mentioned in the video can cause this as well as loose ground screws - also covered in the video. the fact that both left and right are doing the same thing points to a common failure - likely in the power supply.
Thanks, Jordan. I have a Pioneer sx-580 which has been a joy. But now it only powers either one of the speakers, not both at the same time. Can you suggest a repair person in the NYC area?
Hi Jordan. Not sure if you still monitor this but I just picked up a 580 and ordered some LED replacement bulbs. Have you any idea if these would just slide in or would there be some soldering and modification involved. Thank You
Hello! I made a mistake while doing the internal cleaning of my marantz receiver using wd40, and now what can I do to limit the noise that was left on my receiver. need help .
We used zero residue contact cleaner in our shop, that should remove it. customers would sometimes open the door on their vcr's and spray wd 40 on the parts inside, it leaves a mess especially on the video heads.
Jordan Pier Thank you so much because I have this same receiver. I would like your advice, because I know not much about electronics but thought I could fix it. The speaker terminals had gotten crushed during moving and I only had one working. So I ordered the same terminals off ebay, and replaced them. I know I connected everything correctly but now when I turn on the receiver I get a really big hum and I don't know what's wrong. Any advice? I just didn't have the extra cash to take it to the repair shop but maybe I should have, I don't know, but would appreciate anything you can tell me, and thank you for great videos. I just wish there had been a video on replacing these particular terminals, I couldn't find one ANYWHERE, and believe me, I looked. Thanks.
Hey Wendy, if the hum is in both channels, it's likely some part of the circuit board got hurt from the impact that rattled through the terminals when they got injured. Open ground, capacitor that got broken, knocked loose, or failed out of coincidence. If the hum is only in one side, it could be that the terminal assemy had shorted out, causing damage to one of the amplifiers. Hard to point you in the right direction without having the machine in front of me
@@JordanPier Yes, of course. I think I will probably end up taking it to be repaired, because my knowledge is too limited. The sound almost scares me when I turn it on, it's just real loud and then there's like a pop. Both meters jump initially but then only one of them moves after that. I thank you for answering, and again, great videos. Thanks much.
Do you have a preference for the type/name brand of contact/pot cleaner you use and do you have contact info for your bulb guy, I have a Kenwwod 9g that needs some light bulbs-thanks
Hi! My vintage amplituner does not work properly. Left channel contains more low frequency. The right channel sounds is weak... Not great in lower frequency and not the same volume... Can you help me? Thanks
Also would you please give the product names of the cleaners that you used in the repair? Do you recommend compressed air for the dust or use a natural fiber brush instead. Thank you very much for your time!
You can use a canned air duster if you'd like. I've always used a natural bristle brush. Deoxit D-5 for pots and switches. D100 for careful placement on the tuner ground straps. I put it in a syringe for better control.
check to see if the absence of the channel is on all modes. jiggle the tape monitor switches and balance control. if that doesn't fix it, take the top off and look for an open fuse in front of the heatsink. if the fuss is blown, replace. if the new one blows the power pack is defective. if still no sound you've got bigger problems
+Jordan Pier Thanks for the tips. The fuse was blown. Replaced it and it blew again (and had no sound when tested). Changed out the power pack and it is now working good as new.
Not for the beginner. Entire front panel must be removed. Need to very carefully remove the lamp from the housing without breaking it. Clip the leads and solder with heat shrink new lamps in They are 8v 50ma 4.12mm Dgwojo has them. Might as well replace them all
Is front plate clear coated? I'm asking because soon vintage amplifier I bought will be delivered to me, and it has few scratches on front. I wonder how to fix that.
Jordan, thank you for doing this video. I am the original owner of a Pioneer SX-580 receiver. I have an issue with the tuner cable slipping, i.e. I turn the tuner knob and the cable slips without activating the turner. Do you have a video that addresses this repair, or do you have any tips?
Rare for this to happen unless someone has been messing with the tension or string. Check that the tuner drum bearing isn't sticky or frozen. Ensure that all the pulleys are carrying string and no string has slipped off any pulleys - which will reduce overall tension.
@@JordanPier I will definitely check this, I have not had the top off, just noticed that the tuner indicator was not moving down the frequency scale while I was turning the tuning knob.
I just picked up a Pioneer SX-1500TD. Left and right channels will go out intermittently and their popping in the volume control. I'm guessing it just needs a good cleaning and some Deoxit.
@@dpavlovsky you're looking at some real money if you want the works. Recapping a receiver like this, replacing all the signal path transistors, lamps, setups and alignment, etc takes hours. A marantz 2230 restoration of this kind was about 1300 bucks not including shipping. With my workload it would be months
I typed: cleaning volume, and autocompleted cleaning volume pots on stereo amplifier. Within 5 seconds I am watching a guy servicing my tuner circa 1978. What an age we live in.
that tip on using a windex solution to get the faceplate and knobs cleaned up.... man, that really did the job! sparkling like new now!
I'm about to clean up my old SX-880. The switches need cleaning, so it was helpful to see the spots to spray the DeOxit into. Also, I had no idea that the ganged caps in the tuner needed to be cleaned too! Very helpful! Thanks much!
This was very helpful. Almost all of my stereo collections are old school and this helps a lot,thanks.
Great repair look forward to finding more
This was great to watch. Have an SX-580 I want to work on and this provides me with a lot of what I need to understand how to go about things. THANK YOU!!!
I finally got around to it. My receiver now works perfectly. Thanks.
I just repaired my first stereo, a vintage Realistic STA-110. Got to say, thanks for posting this. You answered a lot of dumb questions i had but never asked
Very informative. Have had mine for 40+ years. Still sounds great
This was a great video for me because I am thinking about purchasing a Pioneer 580 that I found for a pretty decent price. Thank you always a pleasure watching your videos.
Jordan, great video! Just purchased a Pioneer SX-580 for a decent price. Look to hold as a vintage collectible and place in my den for listening pleasure. Now I know what to service in order to keep the unit in shape. Will follow your posts religiously.
Well, I learnt something today about cleaning the tuner, Thanks
Thank you for your kind help. I have a KR-750 filthy. But your lesson on the specific actions is my savior
about to clean up an sx 750, so super helpful video! thank you for sharing your knowledge!
Good video, J.D. Have a 580 with the string off the wheels. I think this will give me enough to put back on. Very good, old chap!
Thanks for sharing your skills for this SX-580 receiver because I do have one just like this.So thank u again.
Thanks for the presentation. I have an Akai AM U03 which also uses 'power packs', and I just purchased a digital radio, with bluetooth. It has external removeable links from the tone controls (including volume) to the power stage, and have joined the line output from the digital radio directly to the power stage, and volume, tuning controlled remotely.. At some point, I'll clean up the switches and pot's using the 'extended tube' method you show..
Hi,
Very useful information. Thanks for all this great information.
Regards, Tom
On the deoxit double tube. I was rescreening my windows when the bulb lit up. A short length of .185 or slightly larger window screen spline, slipped over the red tube, works great as a tiny spray hose for out of the reach locations.
It's a shame that as good as the deoxit sprays are that they not only refuse to make it easy to use for what it is intended but have also made it even harder with the oversized unflexible hose and what they send with the bottle won't even fit into the spray nozzle. They need one that is super long, super flexible (near limp) and you could cut it to whatever length you want or make 2 different size hoses from the one piece. Maybe you have some pointers?
Hi Jordan. Excellent video. I think I picked my 580 up at an auction a few years ago. One day it quit. Found a loose connection on the lamp fuse. I don`t know why whole thing quit. Maybe not. Then the dial string came loose. Could`t restring, so put away. The other day decided to take a look. Thought of you tube. Wala! There you were. Followed string configuration. Beautiful! Works perfect. Paying attention to the tuner, I also noticed a 1/4 inch end play on the drum shaft. The play is in the 1/8 inch part of the shaft, splined into the small drive gear, which drives the tuner gear. I may try to see if I can reduce that play, since too far out, can rub cabinet inside wall. Just thought I`d mention it. Will always keep this radio, and just like to maintain in good order. Thanks for help.
Hi Jordan,I just subbed to your channel.I'm a gamer, musician and now an audiophile! Lol
I owned a 580 new in 1979 but lost it in a divorce settlement years ago. i have missed it ever since! I found one recently on Ebay and checked it out and they cleaned the potentiometers recently with Deoxit and tested it. It says to be in great working order. It's supposed to be her by the June 13th. I can't wait till it arrives!Great video's like this equals many SUB'S! Keep up the stellar work!
Thats a nice little receiver
Always had a spot in my heart for BTO. A few things about your SX- 580 receiver. It retailed for about $250 in 1979. Was roughly 18"x13"x5" and weighed 19lbs. Power is 20WPC (not killer but ok for efficient speakers). THD and IM are 0.3% (not good but acceptable for 1979) and signal/noise ratio of 73db phono / 90db line. This unit did have a good FM front end for FM reception. Also a tape monitor and an AUX input.
Where the SX- 580 fails is when compared to the SX- 550 and SX- 535. You really don't need power meters on a 20watt receiver, better to have two tuning meters and where the SX- 580 has one tape loop both the 535 and 550 had TWO (with one way dubbing). Very handy for copying tapes. Plus these receivers had an AUX input too!
Pioneer did have a great budget receiver in the SX- 450 and SX- 434 and if you check ebay you'll see good SX- 450's selling for $100-$150, you'll see SX- 434's for $100+. I've seen (serviced) SX- 525's for $150 and SX- 535's for $295!! The SX- 550 also runs in the $150 and up range.
The SX- 580 might SPEC. OUT better but the other Pioneers are more popular. Go figure? The 580 IS a good receiver, check out the "CLASSIC RECEIVERS" site. Me? I always liked the "Pioneer Blue" look of the SX- 434 series. It was soooo 1970's!
I still use an SX- 434 in my kitchen system. It powers a Nakamichi BX-1 cassette deck and Boston Acoustics A- 40 speakers. Remember now, the SX- 434 is from 1974 thru 1976. That's about 41 years ago. Folks, that is QUALITY stuff!
I have a 550 and a410.510 amp I love the way it sounds.only wish is that it a+b. Out put the 550 needs new lights do you have any idea where to begin to get them
Thanks to you and your video, I brought my SX-580 back to life. It was dead and I was going to toss it when I came across your video. The only thing wrong was that little 33 ohm fusible resistor was open. I replaced it and my SX-580 is working like new again. Thank you!
You're welcome John. Since I've made this video I've discovered another resistor that goes open to check for. I don't remember the value, but if looking from the rear with the top off it's to the left of one of the main power supply capacitors, burried under some wire and a large rectangular power resistor. This should be replaced with a .5w equivalent. When it opens both channels offset -30vdc, which is harmful to your speakers
It's a 100 ohm 1/4 watt - should be half watt. Comes directly off the main negative power supply capacitor
I just bought this,thanks for the video brother,(subscribed),keep it up,greetings from México!
Been binge watching your videos, good job making a rather dry subject very watchable and entertaining, wish you weren't 3000 miles away, I have no shortage of vintage gear I hoard that needs work, hoping to learn but miles behind in my knowledge/experience than one such as yourself, thanks
I love the sound of a 580, and 780, same sound
Awesome video.
Appreciate the loose board ground tip as will check my SX780, . I actually watched another video where the guy sprayed all the fins of the FM tuner.
YOU ARE THE MAN THANK YOU SO MUCH!!
Thank you for this knowledge! My Father passed away last year and my mom gave me his SX-780 with a pair of Sansui SP-X8000’s that I grew up with as a kid. As an only child and latch key kid I got spend a lot of time alone playing music. They are still in great condition but old I’m hoping a cleaning like this will let me enjoy them again.
Awesome video! thanks
Nice thank you for the knowledge. My old Yamaha speaker switches and selector switch needs a little of that deoxit.
I've used an airbrush with alclad chrome model paint to restore the plastic push button knobs. It's 2 part paint. Black base coat, chrome top coat. They will look like new. A little work, but if you have a nice unit with corroded buttons, it will finish the restore.
This was an ebay find I purchased in gorgeous restored condition. It was a replacement for Marantz 2230 which I loved a little too much. The Pioneer has a rather "neutral" sound while the Marantz has that famous warm tube-like tone. While "entry-level " this Pioneer (as well as the Marantz), are very serious players. Definitely very real equipment.
Welcome to the machine.
To renew the keys and knobs made of plastic, I simply spray with chrome paint. Thanks for the video. Like.
Great instruction! Thank you. :0)
Thank you Mr Dillon Sorry if I misspelled your last name.
All my best.
Bobby
Cheers Seth
I stumbled on your videos today and can't stop watching. Very good information thanks a lot. One question could you make a video or description of your setup with scoop, power load (also the one with the lamp, signal generator?
I use fantastic cleaner spray to clean the faceplate and those pesky buttons. Then I put the volume and tone controls in a plastic margarine container with dawn soap and water overnight and then shake it a few times and rinse thoroughly. Looks brand new.
Good knowledgeable video, good narrator skills I have a lot of respect for people who revived antiquated electronics instead of trowing to landfills , but the bench I'm a retired tv tech never seen a bench so messy even when I was repairing 5 units at the times how can you find a lost screw in this chaos ,just a nice clean up with a layer of left over paint would do the trick your scope look like is was un-buried form the dirt your making a video that the whole planet is seeing with your name on !!One thing for sure you cant work SMT on a bench like this were the resistor and cap are small like a grain of salt you drop one on a bench like this and you got to find another one ,people working on SMT from home have a station like a medical operating room !
Interesting your take on the FM Tuner and not to spray the fins, where as another service you tuber just blasted the fins with D5.
This series, at least the higher power versions, were among the least reliable of any Pioneer receivers. The voltage regulators ran so hot they essentially unsoldered themselves from the PCB. They also clipped really dirty and were famous for frying tweeters. This was when Pioneer put all the money into the cosmetics and cut ever corner on the internals but they still sold well because they looked nice.
Yep. The 50 series was probably the last of the real pioneers
I just got one yesterday. The guy said it was playing.
Brought home and I attach one speaker, and there is a quite loud hum.
Adjusting volume does not affect the level of the sound, even turning vol to zero, makes no diffrence.
Thanks for the video, I'll try the service hints you mentioned.
Joel Stolarski if hum in both channels, likely a power supply failure (open capacitors) -but if only one channel likely a failure of the stk-0029 power amplifier ic. Check for DC voltage at the speaker tetminals. Should be less than 50 millivolts
Thank you so much. On A Right-no sound, left hums. On B-right no sound, left hums. don't know how to interpret the meter on the humming side. set to 200m and it -1_ _. A right and B right with no hum, the reading fluctuate from 35 to about 41.
Joel Stolarski the meter is reading beyond the 200 millivolts range you have it set to. In any case, the left amplifier ic is bad and needs replacement. The lack of sound in the right may be due to a dirty switch or control, or the supply voltage may be getting pulled down by the bad amplifier ic. Either way it needs fixing
There's some on ebay, checked mouser,but that number didn't come up.
Joel Stolarski it's not a current production part from any major manufacturer. The ones on eBay are hit or miss. Some work fine, others are counterfeit - either they don't work properly and distort, or not at all.
If you're electronics savy, you can build one from scratch. There's schematics out there for a diy stk-0029. If you plan on keeping it, it's worth the effort to build one
Wow, you solder fast. :o
You also sound a bit like Eugene from the Walking Dead when he's describing stuff.
I think it's just the volume control itself that accounts for the slight difference in output level of the two channels. Been servicing as you have for over 30 years. For test purposes I just re-adjust the balance control as necessary to balance the channels, or use the invert/add function (plus the balance control) to null it on the scope, then switch the scope back to normal display. I can be anal about the two channels matching while testing power etc. :-)
Agreed, this was a great video thanks! One thing seemed to me is that missing in the video was there a cleaning of the entire inside? It seemed late in video the parts were all clean compared to early in video everything was grungy with lint. How was the whole larger area cleaned? I read below where it appears you used a soft bristle brush and air from an air compressor. The grounding screws is something I would not have thought about. I wonder if deoxit should be used on ground screws ???
Good job. Good video/presentation at all. You may should service your chair? xD
i have many 50 series Pioneer receivers and imo i think the 50 series receivers have a superior build quality over the 80 series units .
to polish the plastic knobs...you might try putting a dummy shaft in a hand drill and using a $1 bill as sand paper......light pressure......
the ridges in the engraving might do it.....
Really I will try that Interesting idea.
I have read to clean Silver face recievers use a magic eraser with some deluted simple green on it....
MrAddicted2net toothpaste cleans great. i use standard toothpaste with a soft brush and works like a charm.
Hey I have the same problem as a privious reply, no am fm working. Just wondering where I find the 12v regulator and tip 41cg goes. Thanks.
Tks
For pots you need the green Fader version. It's safe for carbon pots. Do not use the red D5 version, as it will deoxify and destroy the carbon oxide track and you will be forced to replace the pots, eventually.
Thanks for great video. I am a begginer in servicing vintage solid state audio gear. Would you telling where did you pluged signal gen?
resoldering is the option for tarnished soldered components.
Excellent video. I'm servicing kenwood kr3090 and 4070 currently. Love vintage audio. Your video covers exactly what's important. How do you clean the boards and components? Just duster or you spray everything down. I'm not a fan of just dousing it all in fluid.
Natural bristle brushes work for me
you can try the magic eraser that does wonders.
great video as always …..does anyone know where I can find the off/on speaker selector switch for a 680 mine is toast .
thank you
CRC and a toothbrush for your oxidised pot spindles
What did you use to clean the inside of the receiver? After you removed the cabinet the inside of the receiver was full of dirt and dust, then magically it was gone. I’m curious what you used to clean it out. Thanks
Good sar
I'm always nervous about spraying things in there while the unit is on. I know someone that did that and shorted something out and smoked it.
Now that was a great service video. Thanks much.
I just picked up an SX 680, two blown bulbs and the left channel vu meter is non functioning. I had been led to believe it is time to replace the caps even though the unit is working and sounding wonderful, as a preventive maintenance measure. Something about the power packs no longer being available or something. What would you advise, this unit has never been opened for service before.
The spray you are using at 9:00 mark, that evaporates I take it?
Thanks for the great video! Where did you recommend obtaining dial lamps from?
HE said Glow joe.
👍👍
i have 3 sx-580s. they all need gone thru
What is the bets Deoxit products to use to service the Pots on my Marrantz 2252B?
Please do a video on servicing a SX 828 Pioneer
I 2nd this!
Hello fellow 828er
I wish you live in indianapolis
Hello, I have a quick question. A family member was recently trying to clean a similar Pioneer machine with compressed air, and after doing so realized that the FM completely stopped working and that the AM only worked at high frequencies. He didn't use any sort of liquid lube, just a can of air, but we're wondering if it caused the tuner issue that you mentioned-where its capacitance changed and became unusable. Thanks
+Plat the can of air is technically compressed refrigerant which can contain moisture. It may have been moisture got between the fins, or something was jostled loose.
Always clean with a natural bristle brush and blow dust out with a pure air source like a vacuum exhaust or pressure regulated compressor.
HI DO YOU FIX THE PIONEER SX 580 . The receiver worked and then after 5 months rest , it no longer worked . The lights work on the tuning bar .The tuning needle moves but zero watts and no sound from the speakers ?
You should use some of that deoxit on that light of yours lol
Jordan, great video! Just wanted to clarify, are there any (electrical) safety precautions if I just want to clean the pots/switches? Also, can I tighten the ground point screws on the bottom panel without any concerns?
Unplug it of course. Avoid getting any deoxit into the power switch or into the tuner.
The ground screws can be tightened after removing the bottom panel without concern
@@JordanPier thank you for your quick response!
Hi Jordan, can you point me in the direction of the lamp guy you mention in the video? Great job on this, thanks for posting.
Dgwojo.com
What setting do you have your meter set to when checking the resistor?
Jordan , my Pioneer FM radio reception is a cigar looking thing on the back and works great if I giggle it but horizontally ,no fm reception .What up with that ? Goodwill purchase.
Great info, very informative. I do need some clarification though. I see some other repair techs say never use deoxit on pots, only on switch contacts. Because the deoxit has lube in it that messes up the carbon. You look to be able to use it with no problem. Can you explain?
Do you use the deoxit 5, the deoxit gold or which one. Also what is the deoxit part number for the pump can? Thank you.
Tom , deoxit is fine for switches and rotary pots. however some slide pots use a silicone based lube that is necessary for correct operation - which deoxit washes out. for this purpose they have caig faderlube, aka F5. D5 I'd the regular deoxit. D5p is the pump spray
@@JordanPier good to know, thank you!
Thanks for the great video! I have an sx-580 that works fine when first turned on. After a few minutes, the radio stops working - both FM and AM. The stereo light and the signal strength meter stop working as well. The amplifier continues to function, I can play music through aux.
If I turn the unit off for about 30 minutes, it will repeat the process of the radio working for for a few minutes and stopping again. Any ideas what specific things might be failing? I'm going to follow your advice of re-soldering any connections on the back of the board that look dodgy.
sounds like the 12v regulator is failing. it's job is to supply power to the radio. if there is a hum accompanied with the radio fading out them it's likely a capacitor opening. if no hum, likely the regulator transistor is opening or driver transistor in regulator circuit has lost beta
Thank you! I checked the regulator and found that indeed when the radio fails the emitter on that transistor goes from 12v down to 0v, while the base and collector remain at the proper voltages. Thus I assume the 2sd712 is bad and must be replaced.
Use a TIP41c in its place. Mouser part # 863-tip41cg
Hey - good shot! Bulls-eye ))
I wonder if similar applies to the Pioneer SX-1000TW? I just bought one which most likely will need basic servicing.
You can use this as a baseline for a 1000tw, but it will more than likely need alot of capacitors and replacement transistors for the 2sc458s if it has any
Great video! My Dad finally let me have his sx-1280 and would like to clean it up. Are there any switches or dials (other than the tuner) that I should keep the deoxit away from? The only issue with the unit is the phono button. Under normal conditions, the right channel plays at half the level of the left. When I push the phono button all the way in and hold it, the volume is normal. Is deoxit safe for those buttons? Thanks!
Yes, it is safe. It's best to remove the front panel completely and spray deoxit down where the switch button shafts pertrude from the chassis. You can hold one down while you work the others to prevent them from latching. While you're at it you can clean the front panel and dial glass - which typically gets dusty.
@@JordanPier thanks for getting back to me. I just finished tearing it down and putting it back together. Polished all the knobs and buttons. I found a product to work really well for Cleaning the face. After Windex and magic eraser started erasing the lettering, I tried GE screen cleaner thinking it was stainless cleaner, and it worked beautifully! It removed the grime with ease but none of the lettering. I will disassemble and deoxit when my Amazon delivery arrives. Thanks again!!!
Hi Jordan, i was gifted an sx580 that was working perfectly until a few days ago. Now when I turn it on, the watt meters swing to the right and the speakers start going crazy even if i turn the volume nob slightly. What possibly is the issue? Thank you
I'd stop using it until you can get this resolved. the fuseable resistor mentioned in the video can cause this as well as loose ground screws - also covered in the video. the fact that both left and right are doing the same thing points to a common failure - likely in the power supply.
what size lamps
Thanks, Jordan. I have a Pioneer sx-580 which has been a joy. But now it only powers either one of the speakers, not both at the same time. Can you suggest a repair person in the NYC area?
+Toby Horowitz don't know if they still are in business but look up Audio Classics. They may service it
Thanks, Jordan. I'll try to find them.
Hi Jordan. Not sure if you still monitor this but I just picked up a 580 and ordered some LED replacement bulbs. Have you any idea if these would just slide in or would there be some soldering and modification involved. Thank You
@Anthony Maiolo Thanks Man. They did slide in.
HI DO U REPAIR PIONEER 949 A? THANKS
Hello!
I made a mistake while doing the internal cleaning of my marantz receiver using wd40, and now what can I do to limit the noise that was left on my receiver.
need help .
We used zero residue contact cleaner in our shop, that should remove it. customers would sometimes open the door on their vcr's and spray wd 40 on the parts inside, it leaves a mess especially on the video heads.
Jordan Pier Thank you so much because I have this same receiver. I would like your advice, because I know not much about electronics but thought I could fix it. The speaker terminals had gotten crushed during moving and I only had one working. So I ordered the same terminals off ebay, and replaced them. I know I connected everything correctly but now when I turn on the receiver I get a really big hum and I don't know what's wrong. Any advice? I just didn't have the extra cash to take it to the repair shop but maybe I should have, I don't know, but would appreciate anything you can tell me, and thank you for great videos. I just wish there had been a video on replacing these particular terminals, I couldn't find one ANYWHERE, and believe me, I looked. Thanks.
Hey Wendy, if the hum is in both channels, it's likely some part of the circuit board got hurt from the impact that rattled through the terminals when they got injured. Open ground, capacitor that got broken, knocked loose, or failed out of coincidence.
If the hum is only in one side, it could be that the terminal assemy had shorted out, causing damage to one of the amplifiers. Hard to point you in the right direction without having the machine in front of me
@@JordanPier Yes, of course. I think I will probably end up taking it to be repaired, because my knowledge is too limited. The sound almost scares me when I turn it on, it's just real loud and then there's like a pop. Both meters jump initially but then only one of them moves after that. I thank you for answering, and again, great videos. Thanks much.
Do you have a preference for the type/name brand of contact/pot cleaner you use and do you have contact info for your bulb guy, I have a Kenwwod 9g that needs some light bulbs-thanks
Deoxit D5 for the contact cleaned, dgwojo for the lamps. You can find both on google
Hi!
My vintage amplituner does not work properly. Left channel contains more low frequency. The right channel sounds is weak... Not great in lower frequency and not the same volume... Can you help me?
Thanks
What can cause the volume to lower after 2 min. Of play then come up again ? Thanks
Mine has been doing that. Wish someone would respond.
Also would you please give the product names of the cleaners that you used in the repair? Do you recommend compressed air for the dust or use a natural fiber brush instead. Thank you very much for your time!
You can use a canned air duster if you'd like. I've always used a natural bristle brush. Deoxit D-5 for pots and switches. D100 for careful placement on the tuner ground straps. I put it in a syringe for better control.
@@JordanPier Thank you Sir!
The right channel on my sx580 recently stopped working. Do I need to change out the right power pack or could it be another issue?
check to see if the absence of the channel is on all modes. jiggle the tape monitor switches and balance control.
if that doesn't fix it, take the top off and look for an open fuse in front of the heatsink.
if the fuss is blown, replace. if the new one blows the power pack is defective. if still no sound you've got bigger problems
+Jordan Pier Thanks for the tips. The fuse was blown. Replaced it and it blew again (and had no sound when tested). Changed out the power pack and it is now working good as new.
Excellent
I have a Pioneer SX 3800. How do you replace the lights in the function buttons on the front? My speaker A button light is out.
Not for the beginner.
Entire front panel must be removed.
Need to very carefully remove the lamp from the housing without breaking it. Clip the leads and solder with heat shrink new lamps in
They are 8v 50ma 4.12mm
Dgwojo has them.
Might as well replace them all
Is front plate clear coated? I'm asking because soon vintage amplifier I bought will be delivered to me, and it has few scratches on front. I wonder how to fix that.
I think it does have a clear coat, thin though. I've used novus #2 polish with good results
@@JordanPier Thank you for that information. Do you polish manually just using cloth or you use polisher?
@@tjsudac use the novus #2 polish and a cotton cloth or Scott blue shop towell. Polish by hand.
Jordan, thank you for doing this video. I am the original owner of a Pioneer SX-580 receiver. I have an issue with the tuner cable slipping, i.e. I turn the tuner knob and the cable slips without activating the turner. Do you have a video that addresses this repair, or do you have any tips?
Rare for this to happen unless someone has been messing with the tension or string. Check that the tuner drum bearing isn't sticky or frozen. Ensure that all the pulleys are carrying string and no string has slipped off any pulleys - which will reduce overall tension.
@@JordanPier I will definitely check this, I have not had the top off, just noticed that the tuner indicator was not moving down the frequency scale while I was turning the tuning knob.
I just picked up a Pioneer SX-1500TD. Left and right channels will go out intermittently and their popping in the volume control.
I'm guessing it just needs a good cleaning and some Deoxit.
And lots of capacitors
And lots of transistors in the signal path. Anything 2sc458 has to get replaced. It's not if they will fail - it's when
@@JordanPier Thanks for the heads up. Do you provide restoration services?
@@dpavlovsky sure do. If you're willing to wait I can service it for you. I'm pretty backed up right now
@@JordanPier How much for a _The Works,_ i.e. full recap and everything? (Also, how long do you think it'd take?)
@@dpavlovsky you're looking at some real money if you want the works. Recapping a receiver like this, replacing all the signal path transistors, lamps, setups and alignment, etc takes hours. A marantz 2230 restoration of this kind was about 1300 bucks not including shipping. With my workload it would be months