To be on the safe side I replaced all capacitors on the amplifier board and it is perfect. Million thanks again for sharing your guide, the cost of the new capacitors and thus the repair was only 3 euros.
Thank you so much for posting this video. My daughter experienced the same issue with the exact same keyboard. Your step by step explanations were very helpful. Got her up and running again 10 minutes after we received the capacitor in the mail. God bless.
I have the same piano with the exact same symptoms. I was hating the idea of just throwing it away.You've given me a good idea of what the problem likely is, so hopefully I can fix it. Thanks!
There are many videos that give the illusion you are going to get some info out of them, but they are worthless as many do not explain how to go about testing and resolving the issue. Well done in your approach and explanation. The amp section should be the first to be tested, when there is no sound, and caps are notorious for going bad especially if you have had the keyboard for over 10 years. Sometimes visual inspection reveal the puffy bad ones, but this is not always the case. On my PSR S910, the power input/amp section had a bad power cap 6800 uf it was reading around 600 uf I lost sound while fixing the input mic section that goes through a dual op amp on the same board, similar to your board but larger. I took that dual op amp out of the circuit to test it using an op amp test circuit, I thought it was bad, but it actually turned out to be good, however the main cap at the power input was bad, this explains why sometime my keyboard had a delay in turning on which I thought was the external power supply adapter but that was not the case. I am also testing other small caps individually since my keyboard is way over 10 years old and I love it, so I decided to fix it and get it back in working order again. I am just hoping I don't have to replace the amp chips on this board after I replace the bad cap (s). I suspect it is the main cap that delivers power to the voltage regulator that powers the rest of the chips on that board, but the voltage regulator checked also fine. I also just replaced the rubber carbon key contact strips with new original Yamaha replacements and was hoping to be playing it but looks like it is going to need more time to get working again. Cheers!
Thank you so much. I did not have to troubleshoot my daughter's KB since you've nailed the problem, which I confirmed. Though I did not have the exact cap, I used the one I had handy: 150 uF, 35V, polymer. I think that 'overkill' would not hurt :) Cheers!
Hello! All right! So it seems like I have got same problem on a DGX640 I just got in my music store from a customer who didn't want it anywmore. I brought it for repair in a specialized service from Yamaha in Belgium. I would be glad if it's only one capacitor to replace. Thank you for the video!
Awesome! Thank you for the video! I have yet to check my piano with my ne knowledge from this video, but I will be doing so today. (I checked previously, but didn't find the issue). Thank you Turner! :)
Yay nice one,I should drive down in my smiley camper with my guitar for a jam😂 we could start a band & call it the smilers😊 great fix my friend and another instrument saved from the land fill 👍
Thump, maybe my solder joint weren't good enough. Have to check it. Otherwise works fine. Thank you again. Had my 640 for about 13yrs, first time it ever had a hiccup. I was playing it and actually heard it fry the cap and shut down.
Thanks for you video, super useful. I identified 3 faulty capacitor on my board but I don't know how to look for a replacement as there isn't much details on them :/ I can't find capacitor specs for a DGX505 :(
Hi Turner, this is going to be a long shot but it doesn't hurt to ask. I have a DGX-660 that works well electronically, but I get an annoying buzz from the right speaker on certain notes. If I press down on the grill, the buzzing disappears. I already opened it up but couldn't find anything loose that may cause that, but I tightened any speaker-related screws just to be safe, to no avail. The grills themselves are not screwed down, rather that have those "twisted tabs" you also have on this model (visible at 3:46). Has something similar ever happened to you? Other than trying to straighten those tabs to remove the grill and possibly add some foam in between, I'm not sure what else I could try. Any advice would be most welcome! Thanks in advance.
@@TurnersWorkshop97 Did you adjust them "from the inside", by tweaking the bent tabs? I tried repositioning them from the outside but they don't seem to move at all!
Hello! Great video! Question - In order to clean the speakers under the grill, does one need to take out all the screws as well, or is there a way to pop the grill off? Thanks so much!!
Hey, thank you! To clean inside the speakers it’s easiest to open up the piano as there are little metal tabs twisted from the inside holding the metal speaker covers on 😊
Hi Turner, can you play over the hills and far away (only Joking) you know your stuff mate interesting video I always knew you were talented cheers take care.
Thank you. Replaced the exact same capacitor, on my DGX 640, and It works again, it does now have a noticeable thump when turning off the power switch, even with the volume all the way down. Didn't have that before ?? Perhaps the new capacitor, ?
Thanks for this video. I have a dgx 640 and none of the keys make any sound. But if I play a beat it works fine with sound. I tried resetting by pressing the last key but it doesn't recognize it either. Any ideas please for me to diagnose the issue. Thanks in advance
Hi Turner, great video! I have a problem with my Yamaha psr-e373 (only 6 months old). While I was away for a few days I forgot to pull the plug out and my cat lied on it and turned it on... (the neighbor turned it off) ...but the worst part is that the cat also urinated on the very left end (not much, just a spray, not near the motherboard). It had already dried up and I didn't see it at first so I had turned the keyboard on to play. Then I realised something was wrong. Luckily most keys work perfectly fine, also in the left corner... but the weird thing is that the third white key of every chord doesn't work... and also the same black key of every chord doesn't give a sound. Sometimes if I press all the white keys, that don't work, at the same time a hesitant tone comes out... delayed. Or when I press one of the keys very softly suddenly a hard tone comes out. The few black keys do not work at all... If I would open it up and clean the inside of the keyboard very carefully, would there be a chance that it will work properly again? Or is an electronic part damaged? I'm really worried...
Thank you Elianne, I’m very sorry to hear about that. If it’s only 6months old it might be under warranty still? Might be worth looking into. If you need to take it apart because the electronic components are water damaged, then they might show signs of corrosion. It could be worth cleaning with isopropyl alcohol and cotton wool. If this doesn’t work then it would be a case of trying to identify faulty components that could cause the symptoms you mention.
@@TurnersWorkshop97 Thank you very much! Yesterday I decided to open my keyboard myself after watching a lot of video's. The electronics looked all fine and there was no urine.👍🏼 Then I took off the keys and there was a lot of pee underneath, so that was the problem. I cleaned it very carefully and let it dry well. And thank God, it works fine now!! 😃 I'm so relieved.
Found one on the side of the road. Not this brand, but this is going to help. When powered on some lights come on, but no sound. Thank you for sharing.
Hi hope you can help. I've just unpacked my Yamaha CP300 stage piano it was in storage for about 5 months. Switched on but the board is non responsive. I checked the speaker button which was on but nothing from board. I checked the preset song which to my surprise played and was able to adjust the sound using the volume and master equalizer. But still nothing coming from the board. The keyboard was stored in a flight case which is very secure and was clean when I took it out. I'm a bit perplexed what's causing the problem. Any ideas? You help would be greatly appreciated.
Thanks so very much. I found the capacitor, I believe, but I don't know how to find the positive & neg sides on capacitor or board. I have a Roland HP2900G but this gives me some amo on what to look for. 😊 Thank you so muchj
Thank you very much, great video which can potentially save me a lot of money. Do you happen to remember or know the values of the capacitor on the amplifier board?
@@TurnersWorkshop97 Thanks a lot. I was thinking of the other capacitors that I would also change once the piano is opened, as those can also go wrong with time.
Feel dumb asking this, maybe u mentioned it... But it's not possible to measure capacitor using those multi meter probes by touching the solder points? Or is there a lot more going on in there with it connected to the board still?
Not a dumb question at all! If it’s got other components in the circuit you will get different readings so you have to remove the capacitor from the circuit to get an accurate reading.
I have a different problem. Yamaha p-70. Bought it recently and Only the left speaker work and not the right one. U think could be blown speaker ? Or is this symptom issue ? Anybody got a clie?
Thank you so much for this guide, it's giving me hope! Do you remember how hot you heated the soldering iron? I'm inexperienced with soldering, so I'm not completely sure what the problem is, but the solder gluing the capacitor to my keyboard's circuit board (the exact same model as yours) does not seem to want to melt for me at all in the temperature ranges I found advisable.
No problem at all, I hope you manage to get it sorted. I don’t go by an exact temperature but it’s hot enough that the solder melts easily. Are you using electrical rosin core solder?
@@TurnersWorkshop97 Thanks for responding, this encouraged me to push up the heat without worrying (I'd read too much about the dangers of damaging the components/circuit board), and I got the desoldering and soldering going. My keyboard makes sound again, I almost can't believe it! Thank you!
Hi, tank you for that fix. So far it worked! But now i only have sound on the left channel... on the speakers as well as on the headphones.. can you guess what Problem that could be? Thanks a lot, best regards, tobi
Very informative video. Do you have any similar videos for a Yamaha Clavinova CLP300? I have one that the volume slide is not working and you can just faintly hear the notes when a key is depressed.
Hello ! really informative video ! I have an old Yamaha keyboard PC-100. There is no sound if i play it under not normal function. However, if i play it under chord function, it works perfectly. Could you identify what the problem it could be ?
Thank you! If it’s got sound coming from the speakers, the amplifier circuit board is working so possibly the switch that changes from chord to normal isn’t making the contacts on the normal setting.
@@TurnersWorkshop97 No difference. So I decided to change 4 of Capacitor but speakers still very low same as before changing the Capacitor. What to check next? Thank you very much
Hi, this video helped me resolve the completely no sound issue, but now the piano keys are significantly softer than any other sound made by the piano (even the metronome). Confirmed that the speakers overall working fine as the demo music is still decent volume, but any sound generated from me pressing the keys are extremely soft. Any possible ideas what else might cause this symptom?
A man after my own heart 😁 Made anything cool with yours? I’ve got some early laser cutting videos of some projects I worked on. I will definitely do more on it come the winter time.
@@TurnersWorkshop97 sadly not yet I usually mess around with my 3d printer more because i can use that in my house. Would love to learn how to CNC. I have one of the cheap Chinese 3040 cnc machines but I found it's really difficult to use however I will go back to it.....one day 👀 Have you ever gave CNC machining a go? I have a k40 laser with air assist and a few other small upgrades done to it nothing amazing 😔 Campers, mechanics, electronics repairs and making things sums up my life haha 😄 sounds like you're pretty much the same (always something on the go). Can never beat a good project. Love your videos BTW the van builds have been really good and your wood work skills are impressive. I lack the patience sometimes for the perfect finish.
Thanks for that insight. I have a korg Kross 2, with a intermediate sound drop while playing. The sound comes and go sporadically as I'm playing. So, based on your video, you mentioned early on that it can be interference from a head phone adaptor in the head phone jack / or a faulty capacitor. Is that considered an audio interface motherboard where the faulty capapcitor is located? Also can a faulty capacitor make the sounds sporadically drop as you're playing the keyboard and then suddenly return back to normal again? Thanks for your insight. Best wishes. Special thanks again.
I'm about to try this on mine (same symptoms). But I notice that my speakers make a classic slight "thump" when powering off, which to my previous experience would suggest that the amp is getting some juice. Did your example make a thump at all when powered on or off, or was it silent?
@@TurnersWorkshop97 Yes!!! It's fixed. Interestingly I also had a Yamaha Portable Grand NP-30 (bit of a collection, eh!?) that also made no sound. Having fixed the DGX640 successfully, I took a look at that and found four electrolytics on that amp board that looked to be similar values (lower voltage) in a similar configuration. Sure enough, the "bottom" one was dead and replacing that fixed that piano two. I guess they used the same, somewhat dubious, circuit in both! Two fixed keyboards, thank you so very much!
same as my yamaha piagerro np30 with power but no sound, i try to connect it to my amp and check the headphone and output jack but still no sound. I reset it also but still no sound.
Thank you so much for the video!!! I have a Yamaha ypg-625, technically identical to the one you’re sharing in the video. The issue I’m having is that the volume is very low. I can’t really pinpoint that there’s anything wrong with the caps on the power board. Could it be that a capacitor could be “almost” or “half” defective and is causing the speaker volume to be low? Would appreciate any and all help. Thank you.
For some time now, when I touch the body (except for the wooden part) or when I hit the keys a little hard, my piano makes a sound like a marble. This issue gets worse when I hold the pedal and play music.(I tried even when the piano is turned off and there is no electric current in it, it still makes this sound). What is the problem? My piano model is clp725
Hi, I have the same digital piano and it's giving me an issue, I wonder if you could guess what's causing it. Whenever I play a big chord or arpeggio, let's say E major, the piano makes a B flat sound, or it makes a B sound for F minor, or a A flat sound for G minor, etc. I checked the troubleshooting section of the manual and it says the P.A.T. button (performance assistant technology) could be the cause but it's not solving my issue. Do you have any idea on what could be going on?
Hi there, unfortunately I’m not sure about this one. When you reset the piano this setting should be cleared and back to factory settings. Sorry I can’t be much help.
I have this exact one but for mine it’s only specific keys not work namely the d and c# on the lower side of the keyboard any idea what that might be ? I checked the capacitors and cleaned any idea where the problem is ? 😊
hello! I have a Yamaha DGX 660 and the display's contrast is very low now. so its very bright (purple isn't as purple, its all mostly bright) and things are hard to distinguish from some angles. what can I do? I also have some faulty keys and the sound from the speakers sounds a little dirty (??) I've never opened up my piano, Ive had it for 5 yrs
First off huge thanks for posting this video! I followed the exact same steps and now the sound is back! However, there is now a secondary issue. The volume of both L and R speakers is super low even when I turned the volume knob to max. When I plug in my headset the volume is normal. Given both speakers have low volume, I suspect the issue is not speaker itself but another circuit issue such as a depleted capacitor. Any thoughts or advice would be really appreciated!
Actually, I realized one thing. I replaced the C207 with a 10uF capacitor while it should be 100uF. This is probably the issue. Let me fix this first and post back.
Update; I just changed the capacitor to the right 100uF however the low volume issue still exists. As mentioned above volume is ok with headset. Not sure what’s the fix and welcome any ideas!
Last update: I was such a fool that I didn’t connect the speaker therefore the volume was very low. Once I connected it back everything came together perfectly! Once again proved that this video is the crown jewel fix!
Thanks so much. (SOLVED) 😂 . I found the voltage and uf!! I found the capacitor!! But I don't know what kind to order. I can see 50v and IDE on it. It is blue.
Hi. I have Kawai 31 digital piano. He doesn't give any sound. Panel works goed. But no sound coming. I have tested the capacitors on sound power amplifier with Peak ESR 70 gold. Here are the figures
I have Kawai CN31 piano. It gives no sound. I have checked the capacitors on sound amplifier of my digital piano and got the following results in ESR levels. I used the peak ATLAS ESR70 gold. 10000 uF 25V - ESR 0.01 ohm - uF reading 8811uF 2200 uF 25V - ESR 0.02 ohm- uF reading 2015uF 470 uF 10V - ESR 0.20 ohm- uF reading 479uF 100 uF 25V - ESR 0.43 ohm- uF reading 98uF 47 uF 16V - ESR 0.64 ohm- uF reading 50uF 10 uF 16V - ESR 1.01 ohm- uF reading 11uF 1 uF 50V - ESR 1.10 ohm- uF reading 0.98uF I am especially suspicious about theIr results for 10 micro and 1 micro F. They should be around 8 and 5 respectively. Do these results mean that I need to change the 10 micro and 1 micro D capacitors? Thanks for your replies. Tan
To be on the safe side I replaced all capacitors on the amplifier board and it is perfect. Million thanks again for sharing your guide, the cost of the new capacitors and thus the repair was only 3 euros.
👍🤓👍Muchos Dankeschön!!!
Thanks so much for the tip, glad it was useful 😊
Thanks, I just repaired my Yamaha PSR E333 thanks to your video.
Three capacitors were OL.
Just fixed my kids’ piano following your tutorial. First time soldering ever. Thanks a million!!!
Thank you so much for posting this video. My daughter experienced the same issue with the exact same keyboard. Your step by step explanations were very helpful. Got her up and running again 10 minutes after we received the capacitor in the mail. God bless.
No problem 😊 really pleased you found it useful, all the best
I have the same piano with the exact same symptoms. I was hating the idea of just throwing it away.You've given me a good idea of what the problem likely is, so hopefully I can fix it. Thanks!
Fingers crossed this will fix it for you! Please let us know how it goes 😊
Thanks!
Boom! Another one fixed. Next up is a P85 I'm going to take another look at
No problem! Really glad you found the video useful. All the best with your repairs, cheers 👍🏼
Thanks a million! I'd just followed your steps to fix my electric piano, it works again!
My Dx11 Yamaha is doing the same thing.
I'm trying to figure out where to find the part's.??
I spent 1 € and now IT WORKS!!
GREAT!!!
I love you!
Brilliant news! Thanks for your feedback 😊
There are many videos that give the illusion you are going to get some info out of them, but they are worthless as many do not explain how to go about testing and resolving the issue.
Well done in your approach and explanation. The amp section should be the first to be tested, when there is no sound, and caps are notorious for going bad especially if you have had the keyboard for over 10 years. Sometimes visual inspection reveal the puffy bad ones, but this is not always the case.
On my PSR S910, the power input/amp section had a bad power cap 6800 uf it was reading around 600 uf I lost sound while fixing the input mic section that goes through a dual op amp on the same board, similar to your board but larger. I took that dual op amp out of the circuit to test it using an op amp test circuit, I thought it was bad, but it actually turned out to be good, however the main cap at the power input was bad, this explains why sometime my keyboard had a delay in turning on which I thought was the external power supply adapter but that was not the case. I am also testing other small caps individually since my keyboard is way over 10 years old and I love it, so I decided to fix it and get it back in working order again. I am just hoping I don't have to replace the amp chips on this board after I replace the bad cap (s). I suspect it is the main cap that delivers power to the voltage regulator that powers the rest of the chips on that board, but the voltage regulator checked also fine. I also just replaced the rubber carbon key contact strips with new original Yamaha replacements and was hoping to be playing it but looks like it is going to need more time to get working again. Cheers!
Hi! Did you fix it? I'm having the same problem with my piano. Thanks
Thank you for making this. My keyboard is back in business. Same exact capacitor. Must be at a stressful spot in the circuit.
Thank you so much. I did not have to troubleshoot my daughter's KB since you've nailed the problem, which I confirmed. Though I did not have the exact cap, I used the one I had handy: 150 uF, 35V, polymer. I think that 'overkill' would not hurt :) Cheers!
No problem! Glad you found the video useful :) thanks for watching!
Hello! All right! So it seems like I have got same problem on a DGX640 I just got in my music store from a customer who didn't want it anywmore. I brought it for repair in a specialized service from Yamaha in Belgium. I would be glad if it's only one capacitor to replace. Thank you for the video!
All right mate, sounds like you got a bargain if it’s just the capacitor to replace. No worries 👍
Is your problem solved?
Thank You for your video. Exactly same issue. Fixed it using 25V capacitor. I guess there is some problem that exactly same one dies.
Thanks for this video. I have fixed the piano with 50 cents ❤❤
wow - Excellent . Capacitor C207 =107uf Replacement. Thank you.
Gracias Turners Workshop por el tutorial! Con el multimetro correcto y paciencia se puede reparar!
Thanks man, my dgx 640 had the exact same problem. Season's greetings!
Awesome!
Thank you for the video!
I have yet to check my piano with my ne knowledge from this video, but I will be doing so today.
(I checked previously, but didn't find the issue).
Thank you Turner! :)
Thank you, I had the keynote extender thing in the headphone jack like a jackass.
Hehe it’s easily done, glad it’s sorted for you 😊
Yay nice one,I should drive down in my smiley camper with my guitar for a jam😂 we could start a band & call it the smilers😊 great fix my friend and another instrument saved from the land fill 👍
Thanks mate, haha great idea! Not sure I could live up to that name being a grumpy bugger most of the time though lol 👍🏼😊
I have a Smiley camper too 96 I play mandolin and banjo 🤣we could call ourselves The Tranny Turners !........oh wait no actually 🤔
Wow my friend your talents never end brilliant
Thank you 😊
Thump, maybe my solder joint weren't good enough. Have to check it. Otherwise works fine. Thank you again. Had my 640 for about 13yrs, first time it ever had a hiccup. I was playing it and actually heard it fry the cap and shut down.
We’ll done mate. I learned a bunch from this. 😊
Cheers mate, glad it was useful 👍🏼😊
Another brilliant video - and you can play the piano beautifully too! Excellent. 👍😎
Thank you very much! 😊
Thanks for you video, super useful. I identified 3 faulty capacitor on my board but I don't know how to look for a replacement as there isn't much details on them :/ I can't find capacitor specs for a DGX505 :(
"I like how smart you are. I appreciate you."
Thank you for your kind comment 😊
Hi Turner, this is going to be a long shot but it doesn't hurt to ask. I have a DGX-660 that works well electronically, but I get an annoying buzz from the right speaker on certain notes. If I press down on the grill, the buzzing disappears. I already opened it up but couldn't find anything loose that may cause that, but I tightened any speaker-related screws just to be safe, to no avail. The grills themselves are not screwed down, rather that have those "twisted tabs" you also have on this model (visible at 3:46). Has something similar ever happened to you? Other than trying to straighten those tabs to remove the grill and possibly add some foam in between, I'm not sure what else I could try. Any advice would be most welcome! Thanks in advance.
Hi there, I think you answered your own query. I have had this on mine and found that adjusting the metal speaker covers stopped the vibration 😊
@@TurnersWorkshop97 Did you adjust them "from the inside", by tweaking the bent tabs? I tried repositioning them from the outside but they don't seem to move at all!
Hi we have a DGX 660 in our church and it has a volume but not loud. At max it just sounds at like 40%. Is it a capacitornissue too?
Nice video, I have a yamaha prs3000, everything working but no sound, must check my caps ,thanks again sir
Thank you soo much for this, I just completed the same repair following your guide...
And it worked!
No problem mate, glad it helped 😊
Thank you so much!!! Worked well for me
Hello! Great video! Question - In order to clean the speakers under the grill, does one need to take out all the screws as well, or is there a way to pop the grill off? Thanks so much!!
Hey, thank you! To clean inside the speakers it’s easiest to open up the piano as there are little metal tabs twisted from the inside holding the metal speaker covers on 😊
@@TurnersWorkshop97 thank you so much for the response 🙏
Hi Turner, can you play over the hills and far away (only Joking) you know your stuff mate interesting video I always knew you were talented cheers take care.
I can learn it for you 😆 thanks mate, take care
Thank you. Replaced the exact same capacitor, on my DGX 640, and It works again, it does now have a noticeable thump when turning off the power switch, even with the volume all the way down. Didn't have that before ?? Perhaps the new capacitor, ?
No worries, glad it worked for you. Mine does the same thump. Hasn’t been a problem so far.
Load of thanks my dear brother ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ nicky james from INDIA
Thanks for this video. I have a dgx 640 and none of the keys make any sound. But if I play a beat it works fine with sound. I tried resetting by pressing the last key but it doesn't recognize it either. Any ideas please for me to diagnose the issue. Thanks in advance
No problem, I would take it apart and see if there is anything obvious - fuse, blown capacitors, burn marks etc. Clean the dust under the keys.
Hi Turner, great video!
I have a problem with my Yamaha psr-e373 (only 6 months old).
While I was away for a few days I forgot to pull the plug out and my cat lied on it and turned it on... (the neighbor turned it off) ...but the worst part is that the cat also urinated on the very left end (not much, just a spray, not near the motherboard). It had already dried up and I didn't see it at first so I had turned the keyboard on to play. Then I realised something was wrong.
Luckily most keys work perfectly fine, also in the left corner... but the weird thing is that the third white key of every chord doesn't work... and also the same black key of every chord doesn't give a sound.
Sometimes if I press all the white keys, that don't work, at the same time a hesitant tone comes out... delayed. Or when I press one of the keys very softly suddenly a hard tone comes out.
The few black keys do not work at all...
If I would open it up and clean the inside of the keyboard very carefully, would there be a chance that it will work properly again?
Or is an electronic part damaged?
I'm really worried...
Thank you Elianne, I’m very sorry to hear about that. If it’s only 6months old it might be under warranty still? Might be worth looking into.
If you need to take it apart because the electronic components are water damaged, then they might show signs of corrosion. It could be worth cleaning with isopropyl alcohol and cotton wool. If this doesn’t work then it would be a case of trying to identify faulty components that could cause the symptoms you mention.
@@TurnersWorkshop97 Thank you very much!
Yesterday I decided to open my keyboard myself after watching a lot of video's. The electronics looked all fine and there was no urine.👍🏼
Then I took off the keys and there was a lot of pee underneath, so that was the problem. I cleaned it very carefully and let it dry well. And thank God, it works fine now!! 😃 I'm so relieved.
No problem at all, so glad you managed to fix it! Well done 😊
Found one on the side of the road. Not this brand, but this is going to help. When powered on some lights come on, but no sound. Thank you for sharing.
Nice find, hope this is the problem and you manage to get it working! 😁
Hi hope you can help.
I've just unpacked my Yamaha CP300 stage piano it was in storage for about 5 months. Switched on but the board is non responsive.
I checked the speaker button which was on but nothing from board.
I checked the preset song which to my surprise played and was able to adjust the sound using the volume and master equalizer. But still nothing coming from the board.
The keyboard was stored in a flight case which is very secure and was clean when I took it out.
I'm a bit perplexed what's causing the problem.
Any ideas? You help would be greatly appreciated.
Bonjour, merci pour cette vidéo, j'espère que je vais résoudre mon problème identique.
Quelle est la température de votre fer à souder ? Merci.
Hey, no problem! It just has to be hotter then the solders melting point. Think mine was set to around 300C
MERCI, problème résolu. Tout fonctionne comme avant. SUPER CONTENT
Thanks so very much.
I found the capacitor, I believe, but I don't
know how to find the positive & neg sides on capacitor or board.
I have a Roland HP2900G but this gives me some amo on what to look for. 😊 Thank you so muchj
Thank you very much, great video which can potentially save me a lot of money. Do you happen to remember or know the values of the capacitor on the amplifier board?
No problem, thanks for your comment 😊There’s a link in the description to the capacitors
@@TurnersWorkshop97 Thanks a lot. I was thinking of the other capacitors that I would also change once the piano is opened, as those can also go wrong with time.
Feel dumb asking this, maybe u mentioned it... But it's not possible to measure capacitor using those multi meter probes by touching the solder points? Or is there a lot more going on in there with it connected to the board still?
Not a dumb question at all! If it’s got other components in the circuit you will get different readings so you have to remove the capacitor from the circuit to get an accurate reading.
@@TurnersWorkshop97 ... Copy that... Thanks bro
I have a different problem. Yamaha p-70. Bought it recently and Only the left speaker work and not the right one. U think could be blown speaker ? Or is this symptom issue ? Anybody got a clie?
If you try swapping the left and right speaker wires that should tell you if it’s the pcb or speaker blown
I have the same problem as you
Saludos a todos. Pude reparar el piano reemplazando el C-208 ya que el C-207 se encontró en buenas condiciones. Espero sirva para referencia.
Thank you so much for this guide, it's giving me hope! Do you remember how hot you heated the soldering iron? I'm inexperienced with soldering, so I'm not completely sure what the problem is, but the solder gluing the capacitor to my keyboard's circuit board (the exact same model as yours) does not seem to want to melt for me at all in the temperature ranges I found advisable.
No problem at all, I hope you manage to get it sorted. I don’t go by an exact temperature but it’s hot enough that the solder melts easily. Are you using electrical rosin core solder?
@@TurnersWorkshop97 Thanks for responding, this encouraged me to push up the heat without worrying (I'd read too much about the dangers of damaging the components/circuit board), and I got the desoldering and soldering going. My keyboard makes sound again, I almost can't believe it! Thank you!
Hi, tank you for that fix. So far it worked! But now i only have sound on the left channel... on the speakers as well as on the headphones.. can you guess what Problem that could be? Thanks a lot, best regards, tobi
Hi Tobi, glad it worked for you. Double check all of the connectors are clipped in properly as could be a loose connection perhaps.
Thank you it works
Very informative video. Do you have any similar videos for a Yamaha Clavinova CLP300? I have one that the volume slide is not working and you can just faintly hear the notes when a key is depressed.
Hello ! really informative video !
I have an old Yamaha keyboard PC-100. There is no sound if i play it under not normal function. However, if i play it under chord function, it works perfectly. Could you identify what the problem it could be ?
Thank you! If it’s got sound coming from the speakers, the amplifier circuit board is working so possibly the switch that changes from chord to normal isn’t making the contacts on the normal setting.
Question? When checking the capacitors keyboard needs to be unplugged right?
Yes make sure it’s unplugged
I've replaced C207 but speakers still low any advise thank you so much. Dgx620
Did it make any difference changing the capacitor? Was the original fault no sound at all or low sound level?
@@TurnersWorkshop97 No difference. So I decided to change 4 of Capacitor but speakers still very low same as before changing the Capacitor. What to check next? Thank you very much
@@christmassajjaharutai8051hello, I'm having the same issue, did you fix it? Thanks
Hi, this video helped me resolve the completely no sound issue, but now the piano keys are significantly softer than any other sound made by the piano (even the metronome). Confirmed that the speakers overall working fine as the demo music is still decent volume, but any sound generated from me pressing the keys are extremely soft. Any possible ideas what else might cause this symptom?
I see a laser cutter 😆 your man cave is similar to the one I have haha good fix. Will be nice to see some laser cutting videos 😛
A man after my own heart 😁 Made anything cool with yours? I’ve got some early laser cutting videos of some projects I worked on. I will definitely do more on it come the winter time.
@@TurnersWorkshop97 sadly not yet I usually mess around with my 3d printer more because i can use that in my house. Would love to learn how to CNC. I have one of the cheap Chinese 3040 cnc machines but I found it's really difficult to use however I will go back to it.....one day 👀 Have you ever gave CNC machining a go? I have a k40 laser with air assist and a few other small upgrades done to it nothing amazing 😔 Campers, mechanics, electronics repairs and making things sums up my life haha 😄 sounds like you're pretty much the same (always something on the go). Can never beat a good project. Love your videos BTW the van builds have been really good and your wood work skills are impressive. I lack the patience sometimes for the perfect finish.
Thanks for that insight. I have a korg Kross 2, with a intermediate sound drop while playing. The sound comes and go sporadically as I'm playing. So, based on your video, you mentioned early on that it can be interference from a head phone adaptor in the head phone jack / or a faulty capacitor. Is that considered an audio interface motherboard where the faulty capapcitor is located? Also can a faulty capacitor make the sounds sporadically drop as you're playing the keyboard and then suddenly return back to normal again? Thanks for your insight. Best wishes. Special thanks again.
I'm about to try this on mine (same symptoms). But I notice that my speakers make a classic slight "thump" when powering off, which to my previous experience would suggest that the amp is getting some juice. Did your example make a thump at all when powered on or off, or was it silent?
I had the same thump when powering on and off 👍🏼
@@TurnersWorkshop97 Yes!!! It's fixed. Interestingly I also had a Yamaha Portable Grand NP-30 (bit of a collection, eh!?) that also made no sound. Having fixed the DGX640 successfully, I took a look at that and found four electrolytics on that amp board that looked to be similar values (lower voltage) in a similar configuration. Sure enough, the "bottom" one was dead and replacing that fixed that piano two. I guess they used the same, somewhat dubious, circuit in both!
Two fixed keyboards, thank you so very much!
same as my yamaha piagerro np30 with power but no sound, i try to connect it to my amp and check the headphone and output jack but still no sound. I reset it also but still no sound.
yes it was helpful thanks!!
Hi,
I have an e-piano that has sound, but veeeeery low. (On headphones as well.) Do you have an idea, what might be the cause? Would be great! ❤
Hi, no sorry I’m not sure on that one. Have you tried all the factory resets and checked all the digital volume settings?
@@TurnersWorkshop97 Hi, thanks for your reply! I will try that first and let you know if it helps!
Thank you so much for the video!!! I have a Yamaha ypg-625, technically identical to the one you’re sharing in the video. The issue I’m having is that the volume is very low. I can’t really pinpoint that there’s anything wrong with the caps on the power board. Could it be that a capacitor could be “almost” or “half” defective and is causing the speaker volume to be low?
Would appreciate any and all help. Thank you.
Wire ends are tinned, and fit fine into the sockets. Just gotta be careful.
Anyone have advice if the keyboard is dead but the sound is still good on the demos etc?
For some time now, when I touch the body (except for the wooden part) or when I hit the keys a little hard, my piano makes a sound like a marble. This issue gets worse when I hold the pedal and play music.(I tried even when the piano is turned off and there is no electric current in it, it still makes this sound). What is the problem?
My piano model is clp725
Hi, I have the same digital piano and it's giving me an issue, I wonder if you could guess what's causing it. Whenever I play a big chord or arpeggio, let's say E major, the piano makes a B flat sound, or it makes a B sound for F minor, or a A flat sound for G minor, etc. I checked the troubleshooting section of the manual and it says the P.A.T. button (performance assistant technology) could be the cause but it's not solving my issue. Do you have any idea on what could be going on?
Hi there, unfortunately I’m not sure about this one. When you reset the piano this setting should be cleared and back to factory settings. Sorry I can’t be much help.
I have this exact one but for mine it’s only specific keys not work namely the d and c# on the lower side of the keyboard any idea what that might be ? I checked the capacitors and cleaned any idea where the problem is ? 😊
If yama e433 has sound but it not loud eventhough full volume is it capacitor faulty?
hello! I have a Yamaha DGX 660 and the display's contrast is very low now. so its very bright (purple isn't as purple, its all mostly bright) and things are hard to distinguish from some angles. what can I do? I also have some faulty keys and the sound from the speakers sounds a little dirty (??) I've never opened up my piano, Ive had it for 5 yrs
mine can only audio to the left speaker/ left headphone. What do you think the problem is?
Is there a small speaker balancing potentiometer on the back panel?
First off huge thanks for posting this video! I followed the exact same steps and now the sound is back!
However, there is now a secondary issue. The volume of both L and R speakers is super low even when I turned the volume knob to max. When I plug in my headset the volume is normal. Given both speakers have low volume, I suspect the issue is not speaker itself but another circuit issue such as a depleted capacitor. Any thoughts or advice would be really appreciated!
Actually, I realized one thing. I replaced the C207 with a 10uF capacitor while it should be 100uF. This is probably the issue. Let me fix this first and post back.
Update; I just changed the capacitor to the right 100uF however the low volume issue still exists. As mentioned above volume is ok with headset. Not sure what’s the fix and welcome any ideas!
Last update: I was such a fool that I didn’t connect the speaker therefore the volume was very low. Once I connected it back everything came together perfectly! Once again proved that this video is the crown jewel fix!
Thank you for your comment, really glad you managed to get it sorted. Nice work! 😊
Thanks so much. (SOLVED) 😂
. I found the voltage and uf!!
I found the capacitor!! But I don't know what kind to order. I can see 50v and IDE on it. It is blue.
All my capacitors were working but still no sound 😢
Then it must have a problem inside
Is it works with external speakers/headphones?
Meu autofalante esta funcionando somente de um lado. Sabe dizer o problema
Hi. I have Kawai 31 digital piano. He doesn't give any sound. Panel works goed. But no sound coming. I have tested the capacitors on sound power amplifier with Peak ESR 70 gold. Here are the figures
i have a yamaha ypg 635 and my left speakers arent working but the right sound fine
You could swap the l&r wires around to see if it’s the speaker or circuit board.
oh dang , now why didnt I think of that. thanks . hehehe @@TurnersWorkshop97
I took the exact same resistor out and didn’t replace it. Works perfectly without a resistor.
*capacitor
Interesting that Yamaha had wires to connect stuff and not wires attached to plugs. Was a bit worried about damaging the wire ends like that.
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Tengo un dgx 620 .Lo que el tiene es que el sonido al maximo nivel es muy bajo.Que será?Ayudame por favor.
Me pasa igual😢
1 more reset 1 key and tre first black keys hold all down and power up all set to default also 2 steps
I have Kawai CN31 piano. It gives no sound. I have checked the capacitors on sound amplifier of my digital piano and got the following results in ESR levels. I used the peak ATLAS ESR70 gold.
10000 uF 25V - ESR 0.01 ohm - uF reading 8811uF
2200 uF 25V - ESR 0.02 ohm- uF reading 2015uF
470 uF 10V - ESR 0.20 ohm- uF reading 479uF
100 uF 25V - ESR 0.43 ohm- uF reading 98uF
47 uF 16V - ESR 0.64 ohm- uF reading 50uF
10 uF 16V - ESR 1.01 ohm- uF reading 11uF
1 uF 50V - ESR 1.10 ohm- uF reading 0.98uF
I am especially suspicious about theIr results for 10 micro and 1 micro F. They should be around 8 and 5 respectively. Do these results mean that I need to change the 10 micro and 1 micro D capacitors?
Thanks for your replies.
Tan
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Shhhh...don't tell anyone. This is the 3rd one I've fixed from this video.
Nice work! your secret is safe with me 😆
I have problem with my keyboard, do you have maybe facebook or instagram to contact you
I'm on Instagram feel free to message me on there😁