JVC CA-E23L stereo system repairs, replacing idler tyres with o-rings
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- čas přidán 22. 05. 2021
- Repairing a 1990 JVC CA-E23L stereo system. Replacing bad idler tyres in the cassette deck mechanism with rubber o-rings for plumbing, tweaking the tuner, and fixing the volume control.
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Jvc wasn't junk. Jvc is the kings of inexpensive yet really good
This stereo reminds me of a Philips that I have in the garage!
Great job on the idler wheel repair! It took me back to the early 80's when I was very young and trying to fix the idler wheel on a turntable by wrapping sticky tape to increase its diameter so that it makes good contact! Yeah, it didn't work! I wasn't even a teenager yet but I was definitely way out of my depth LoL...
I love the sound of those STK's, even the TDA2050's and 2030'S have an amazing sound quality! 15W doesn't sound like much but connected to a larger set of speakers with the right sensitivity, it would rock the house with no problems at all!
I have a 13W per channel amplifier paired with 15" 3 way speakers and people can't believe that this is what a 13W per channel amplifier can do!
Well done once again!
My first idler wheel repair attempts were quite similar. Wrapping textile tape around motor shafts to make them push harder onto a bad idler wheel. I only had very limited success with that. The TDA2030A indeed is quite good for what it is. I like it. The little amplifier on my workbench to which I connect audio equipment for testing is based on two TDA2030As.
@@DrCassette hahahaha we humans are a funny lot!
I have opened up radio's to find the person inside who was doing all the talking lol.
I once tried to replace the potentiometer on my single speaker radio cassette player with a potentiometer from a TV because the TV was much louder hahahaha ROFL I don't know what I was thinking back then but I was definitely very young and electronics classes were many many years away!
I'm sure that there are many different stories out there that people have done when they were young and thought that the world worked different from reality LoL.. thinking back to that time, it makes me laugh at some of the things that I have done but I guess that's the process that makes us who we are today!
Have you seen the datasheet for the TDA 2030A? I really like the circuit examples given, I have a lot of the TDA2030A chips and plan to build them one day, I really like the powered 3 way amplifier circuit! There's a 2 way design in another datasheet, I think from memory it was the TDA 2020 or something along those lines...
John audio tech has made some very good measurements of the 2030 and the 2050 also and they are both directly compatible with each other!
I have seen your bench amplifier, well I have seen just about all your videos, this is exactly what I love to watch, for me! This is what would make good TV! (I'm not sure what a TV is anymore LoL).
I love the moment when you realize someone has already been inside the device your working on.
I think its funny to see how people tried fixing a certain device once already
It's just odd that they replaced the original idler tyre only on the A deck but not on the B deck...
@@DrCassette Maybe back when they replaced it only one was broken
Nice fix with the rubber O rings.
Thank you :)
JVC equipments of that time was not known exactly to be easy to repair, but these cheap system seems to be well built and planned to be easy and cheap to repair. After all, it seems to me to be an honest and affordable sound system for those who don´t have the money to buy something better and/or is not interested in using more features, specially regarding the cassete tape. recorder Congratulations for the video, gave me some interesting moments os leisure.
To be honest this system is really well-built, even though is pretty low-range. Here CD works after all these years, when my mom's stereo she bought around 2005 broken just after two years (CD player, cassette deck and LCD screen stopped working). It seems like audio systems were well built until late 90s, when quality went downhill.
An STK when driven well can sound fantastic.
I did the same o ring fix on a kenwood deck I bought non working. Now it works. I do feel in my case the torque is not too much but it still works.
Excellent video.
This is the type of repair/rejuvenation that I am comfortable with carrying out myself and to be honest sometimes it works and other times it doesn't.
I had never come across the fault with the traction tyres before (especially the idea of tackling it from the front) but you have opened my eyes to the possibility of it happening in the future.
Thanks for a great video, much appreciated.
I'm glad this video was useful. Bad idler tyres are a very common problem, if a cassette mechanism doesn't work but the belts are fine, it's usually due to bad idler wheels.
What a coincidence! I had this JVC stereo set with speakers on my attic for a while and sold it today for € 15, - It's a very basic stereo set but with good sound!
I fixed my Tascam 122 cassette deck the same way. I was having trouble finding correct idler tires so I used plumbing O rings. Worked great and is still working fine. I did finally locate proper tires for it but so far I'll leave it working and put the tires in if needed later.
dude, the deck looks beautiful
Nice work. I just restored a Sony CFD-5 cd cassette radio from 1988. Working great now and amazing sound.
Thank you for the idea about cleaning chemicals from the o-ring first. I recently used an o-ring to repair a Yamaha K-960, but used some fine grain sandpaper on it instead.
I can already see eBay sellers offering this as an expensive "idler tire replacement" 😂
Very nicely explained and faults rectified
Thank you.
I'm only watching in 720p, and not even in full screen and I could already spot the missing idler before you even pointed it out!
Thanks for the video, this will help me with my Sony LBT-A17 that also has some problems, in a quick view I could see that they are the belts but the mechanism is a little more complicated and I just took a look without disassembling it, some day I will try to repair it.
Nice fix for this charming little system. Of course it's cheap but I like the esthetics of it. In 1990 I went to college and a lot of students in my home had similar devices like this back then. Not me though, I had a mishmash of seperate components and still have that today (not the same components but they are from that era) 😁
Very interesting remedy! I recently have started playing with old stereo stuff and your channel is VERY informative. :-)
Yet another great repair. Sounds good to me!
Thank you :)
Good on ya for the repairs! We've used O-rings before and had hit-or-miss results. Old Panasonic/GE VCRs worked out best...
I think JVC from late 80s into early 90s were well built and usually had good sound quality. Nothing amazing but they did a good job for the consumer level audio products.
This was oddly satifying!
Nice job mate! thanks for sharing this! btw, I love that orange vfd! still working great!😊
Great bit of detective work :), really enjoyed the video
Thank you :)
Great job Doc.
Thank you :)
21:10
The thing you tweaked is responsible for FM Detection. It's a common issue for PLL FM/AM Tuners.
Thanks for the info!
@@DrCassette I always encounter this issue countless times. Also on some components that uses Ceramic Discriminator (Pioneer and Sony)
@@DrCassette just yesterday I adjusted a JVC FX-E91L. Same problem! If you want to tweak it perfectly, the voltage over FM CM test wires should be 0V when tuned. Found it on the service manual for the FX-335TN/FX-335LTN.
It is superb. I think you more effort to cassette deck and the tuner. It is good job
Thank you :)
its a nice video, thank you for uploading. any way i noticed in its mechanism; no Reverse/cue, no full auto stop, no pause control in deck A, but this mechanism looks more reliable than tanashin
for the age of the system and the kind of system i think it behave very well!!!!!!
My mother bought in the early nineties a very similar-looking Akai set, similar quality. The CD player was a bit picky on CDs, I guess that got better after I cleaned it once, otherwise we never had any trouble with it. It also came with a very crappy record player, the stylus fitted in a better record player I had lying around without a stylus, so that fitted perfectly :-P.
Hi there I had that jvc stereo a few years ago . The play button got stuck twice on the play and record deck . Still a good stereo thou . I had a record player on the top of it .
Nice repair on that cassette mechanism
Thank you :)
well done man!
Thank you :)
A great result.
Good job.
Thank you :)
Reminds me very much of a Sony midi hifi system that I once had, the LBT-V102. But that system had a turntable, and a seperate CD player, CDP-M18.
But it was similar in lots of ways, the CD player display gave a bit more info than just the track number though, but was the same orange colour. The same for the built in tuner. It was ok for a budget priced system I guess, but the CD player outlived the rest of the system by a few years, and actually became the basis for my first real seperates system, and was a good CD player to be fair.
hi have a rig i put the rubber ring on it turns the ring a run and use a mini file to make it like the real thing i did this to all my ADAT all are working how
best to use the flat O rings not the round ones flat is more grip where it goe's up to the next roller
That is a very good idea to flatten the outside of the o-ring!
Perfect
I have an older AKAI deck waiting for its rewind tires replacement. I'll try this plumbing o-ring method too
Good luck! :)
@@DrCassette thanks!
It has the opposite setup: rewind and ff through friction tires and playback always engaged through belts and flat felt friction plate.
I love the tyre replacement on the cassette decks with o-rings that would normally b used in plumbing taps?
I have to try that on the old voxon am stereo receiver double cassette deck stereo with the idler wheels.
On the tuner board,,,is the red screw for am band,,,along with the other 4 adjustment screws? Did u check the am tuner sensitivity and alignment as well?
Good how u had that particular fm auto tuning alignment ruler? Never seen one of those things b4. I had a seperate electronic stereo tuner that had the same problem,,,just kept searching for stations without stopping. Found out the circuit board joints were dry,,,along with fine tuning that small screw if transformer.
Resoldered the dry joints,,,and the tuner did work as it should,,,after re-aligning it to stop dead on station frequency after auto tuning.
There are no more AM stations in Germany, so there is no point checking the AM tuner...
Ok. We still have a lot of am radio stations here in Australia.
I remember these :)
I got that stereo in 1992 .
Funny how the front looks like a stack of multiple components, while it's just one device with a very large front panel.
7:40 You can also use the video as a reference for how it came apart.
9:50 Remember, many types of polymers and rubbers harden out by the use of Isopropyl alcohol... so be careful with it.
@@DoubleMonoLR Yeah sufficient headroom of the power amp and the quality of the speakers is what makes/breaks the sound quality of most of those units.
at least its saved from going to landfill
Great!!!
Have a jc penny cassette player 8 track record player combo. I need help with putting the belt on. Do I really have to remove the little gear with the spring that adjusts the speed? The screw is stripped some body already tried maybe? What can I do ?
Good gravy, you are a lucky, yet unfortunate soul. Yes, you do need to remove that infernal spring loaded piece. Getting the belts replaced, and the tension on the idler arm set properly, were two of the most frustrating parts of working on mine. I owned 2 of them. I cannibalized 1 for parts. Both units main cassette decks were broken, but the single cassette deck model had both right/left audio channels working, while the more deluxe version (1 standard cassette deck + 1 playback only above the 8-track) had a plethora of issues. So I fixed the single model. Restored cassette deck function, readjusted 8-track head, greased and swapped parts on the turntable, added lights, added VU meters above the 8-track. Too much work for a JCPenny.
Back in the early 90s some of these all in one stereo systems were not bad. Even though this is a mechanical cassette deck which is
hardly surprising it's not quite the same as the cassette decks on more modern cheap systems from the 2000s, the cassette decks
on this are even better than the cassette deck on my LG micro system even though that is all soft touch control but mine has no Dolby
but by the late 90s I think the cassette decks were more an after thought as cassettes were being phased out at that time. Originally this
would have been sold with a seperate record deck which tend to be better than so called built in record decks on many of the cheaper midi
systems so this would have been a 2 piece stereo system. Also back then if your stereo failed under warrenty they were more likely to fix
it which was part of the reason older midi systems were more user serviceable if they could fix it. JVC, Sony, Pioneer, Technics and Panasonic
always made decent hi fi equipment. This one also has reasonable quality speakers.
You can use square-ring rubber, that would be perfecter replacement part.
But where do you get those?
@@DrCassette Was the replacement O ring to fix the pause problem found in the O ring kits that you bought?
Good job on the repair!
Yes, I went back to the kit that the o-rings I first tried came out of.
I have one of these systems but has been stuck in a cupboard for years without use, I thought I'd try it out again but there was no UK plug on it, what amp fuse would the plug for this system need?
A 3 amp fuse should be more than enough.
Good stuff.
Hi, I put a blueetooh on mine to work with the phone but now I have a buzzing sound in the speakers when I play and turn up the music a lot. Is there a solution?
If you didn't have a stereo system, you'd be glad of that one. Luckily the repair was so cheap to carry out and relatively easy to gain access. Some mini systems are an absolute nightmare in that regard, for example the late 90s AIWAs, where the volume control is buried between a huge PCB and the front panel. Sadly I don't think there is much demand for these systems second hand, making all but simple repairs economically inviable.
i have both an aiwa mini stereo system (which i got from my nephew cause it was about to end up in a landfill, good working condition so I took it) and an aiwa all-in-one stereo system (which my dad bought back in the 90's). i absolutely agree with you on the repairability of the mini systems. Just to get in the first half of it is already a nightmare. I was trying to clean it but due to how very difficult it is to access the insides, I stopped cause of fear of breaking it. On the other system it was a breeze repairing it. Despite of that, I really love these aiwa systems cause of its superb sound quality.
Hi...wonder if you may have any ideas for this situation, involving a JVC CA-S50BK where by the CD/tape deck component was suspected to be short-circuited because the main power was connected prior to connecting the data cable of the CD/tape deck component to the main amplifier/tuner/phono/aux component...
Nice fix! Definitely seems like a slight step-up from those even cheaper catalogue brand systems that were around at the time..which often gave the nicer ones a bad name! Definitely recall motorised volume with remote control being a big deal, back then! Simpler times!
JVC always did seem to favour that amber/ orange for their displays and digital read-outs. Their higher-end separates and VCR's from that era had the same look about them. Sometimes they cheated a little and used incandescent bulbs shone through an LCD, but done in a way to look very convincingly like a VFD!
That's interesting you say the amplifier is underpowered for the speakers. Perhaps a contender for one of those retrofit Class-D AliExpress modules to get the full 50w - with the added benefit of Bluetooth support, etc :)
I really like the amber/orange coloured displays JVC used, and I was pleased to see that they remembered to put an orange colour filter in front of the red double digit LED display of the CD player in this system. The 50 W rating of the speakers is most likely exaggerated, the amplifier is probably not as underpowered as it seems. I should have mentioned that in the video. I don't think some class D amplifier module would be an upgrade sound quality wise. And music transmission via Bluetooth sounds absolutely dreadful anyways ;)
Dust the cd tray it will thank you for it!
stks aren't bad at all they can produce good sound .
Can safely assume the o ring that worked had a smaller outside diameter.
That's what I said in the video...
Auu, die Sony HF, das tut weh.
Die Decks scheinen den Autostopp nur durch die Fühler am Band durch das Straffen am Bandende zu triggern und nicht wie sonst bei besseren Geräten üblich über die Wickeldorne, wobei manche Geräte (von Studer und Revox) auch mit Lichtschranken das Band überwachen...
Das sind ganz simple Laufwerke, der Autostop wird auch nur bei Wiedergabe durch die Fühler getriggert, FF und REW laufen endlos.
The W/F is 0.2%? Are you sure?
Holy crap... my turntable W/F is about one tenth of that!
You can not compare a cassette mechanism to a record player. These are two different mechanical systems. You also have to note the measurement standard used to determine the W&F value. I measure according to DIN. The American and Japanese measurement standards result in lower numbers. Finally, as I have said, it is a dual cassette deck, running of one cheap no-name motor. You can't expect much from that.
@@DrCassette Fair point... I always found that record players tend to produce better sound quality than cassette.
Cassette is a portable format after all.
idler tires ..mmm maybe goodyear or michelin
Yeah, 50w PMPO not RMS
What are you talking about, it's clearly stated that the system has 15 watt output. The only time 50 is mentioned was at the end, and it was the power handling of the speakers he used to try this out!
Yes, the power handling of those speakers would only be 50watts PMPO not RMS. You can tell just by looking at them.
What's so confusing for you? ...and why are you so bothered about it?