This is to resolve the issue of no sound in one channel or both channels for a Yamaha Clavinova. You may also have other symptoms like horrible distortion or sound cutting in and out.
Thank you! Excellent information. Enough to ensure another Clavinova CVP 210 didn't get sent to the crusher because a Yamaha technician wrote ours off as unfixable. My husband was able to use many of your tips to ensure it is now working again. Brilliant!
CVP210 seems to have the same DAC's installed. Power to them is fine +5, -5V. Think I will order 2 new ones. Will get back here to tell if it worked or not... Thank you for the very clear video. I think many people will benefit from it.
no questions. Just for interest. I am diagnosing this very issue today, same model 209 EP. Your vid was very helpful in focusing the trouble shooting. I had already done the audio tracer thing up to output of mother board, so it was mother board issue and Yamaha just said "not repairable, obsolete." Reading some of the comments here some have distorted issues. No sound but all functions seem to work, same audio amp working, aux inputs fine. Nothing at Aux out. Your cct dia showed me the outputs of the DACs at pin14 on each so i injected audio there proving the op amps working. What is funny is I spent a while here on line looking at other threads in forums, and having lunch, all while the yamaha was turned on and demo mode playing with obviously no sound. Just found the chips on Ali Express and about to order when huge ripping scratching noise from workshop, and suddenly music pouring out of left channel. Then it intermittently went good/ off/ good/ noisy, then distorted for a while, more noise, then back to good again. Freezing the DACs didnt change anything. heating with hair dryer caused one more fit of noise but not a second time. Ha ha. gonna replace both. I have noted all this here for the next poor victim who comes along seeking help. For their information the demo mode still plays ok with the two sub boards removed, but that will stop the keys playing. Running demo to prove audio at pin 14 of each DAC with left hand sub board removed for access works fine. Link to a supply of DAC chips....theres heaps on Ali Express... www.aliexpress.com/w/wholesale-pcm1702.html?spm=a2g0o.home.search.0
Hi nice and helpful video, maybe you have an idea what could be if there is NO SOUND at all (speakers or headphones)at cvp307 but all lights and buttons working fine. Thanks
Great video! It's shed some light on the issue I've got with my CVP 305. I'm just wondering whether I can use the same components depicted in the video. Basically, the voices of my CVP 305 sound quite distorted and whenever I play a chord, the sound disappear (even with headphones). The only instrument set that works perfectly is the "organ flutes"...
The issue explained in the video would include all instruments, all sound. If your organ flutes are working, it probably isn't this issue... but might be the start of it!
Hi thank you for the video, mine was the same no sound from the speakers, other than a buzz sound on full volume, mine went one channel at a time, the first about a year before the second. I carried out the repairs as stated and it is still the same! Is there possible something that I could have missed? Or could the chips I got from eBay be poor quality ? Thank you Steve
Sorry I didn't see this before now. Do you get sound from headphones plugged in? If you don't, it's not this problem. If all is ok via the headphones, it could be either these chips or the amplifier. Thanks.
I have a csp-170 and when i press the keys the sound is terribly distorted and high pitched noise but no piano sound unless you hold the key and you can hear it under the distortion both in headphones and speakers, the power button also doesn't turn it on only when plugging it back into the wall will it turn on by itself, what could it be?
I changed the both IC28 and IC29. First was the Left channel crushed, and aprox. one year later the other. The amp. work well, the AUX IN work well in speakers and headphones. So I've decided to change the both PCM1702. Well, the sound comes back in both channels but sound very distorted, unrecognized sounds in both channels. Almost all presets sound like a fuzz guitar. I got the audio signal directly from the motherboard, from the out multi-connector and sound igual, bad... do you have any idea?
see main comment I just posted re intermittent noise/distortion. Have you got any further with the issue? I am about to order DACs so the distortion thing might be another issue beyond the DACs...
In troubleshooting one of these, I got to the point where it looked like maybe both DACs failed, but I thought that was doubtful. However if you say they fail often, I am ordering a pair today. Fingers crossed!
@@blackstone4823 No audio signal at the output of the DAC, confirmed with an oscilloscope. Audio from line in plays fine. TG (tone generator) tests in factory self check reports good.
@@blackstone4823 The DAC chips came in (eBay seller who happened to be in my state). I replaced them and bam, up and working! To remove the bad chips, I used an SMD removal kit called Chip Quik that is so easy and less heat stressful to the board and surrounding components. Thanks again for this tip!
@@artierobinette4903 That's great news! Pleased it worked out for you. Quik Chip sounds good, not sure we have those here, but I'll look in to it. Happy Piano Playing! 👍
Hello 👋 I have an issue on a 107 when I select certain tones e.g. Piano. And I get totally distorted sounds. Whereas other tones are ok. Does this sound like a faulty DAC?
Hi, you're doing an excellent job, yamaha should hire you, my issue is different, the screen light on but without image and without sound. There's no light on the buttons either. What do you think?
Hi, I have a yamaha clavinova cvp 208, no sound. No sound from headphone either; but when I connected an audio line to the piano, there was a faint sound barely audible from both speakers. Strangely enough, when I turn the volume nob higher, the sound will go lower and vice versa. Can you help me pin point the problem? Thank you in advance.
Does the volume control knob work? Test the sound through headphones as well as the speakers. If it works through headphones then the speakers could be blown, or it could be the main amplifier circuits. Thanks.
@@blackstone4823 It works to a degree but think it may the problem. I took vol assembley apart and it has some damaged traces on inside. They are specially coated so not repairable.Are these available aftermarket or Yamaha only?
The vol control is no longer available from Yamaha but I found a match on Digikey thanks to their tecch support. Its part no. 118-PRS14R-30120-103A3-ND . It didn't fix the main problem but at least no longer crackles so would have been needed anyway.
That's 100 percent correct but don't assume you have the skill set to do it as if you don't your piano is 100% a write off - They are cheap to repair here approx £35 plus carriage if you supply the parts here : www.ebay.co.uk/itm/113727299391 complete repair including parts here: www.ebay.co.uk/itm/223431045508 and the parts here : www.ebay.co.uk/itm/113712989049 remember you need one device per channel if your piano is silent it needs 2 devices!
