keys on the keyboard stop working

keys on the keyboard stop working Hello some of the keys on my keyboard stop sounding. Does it means i´ve got a broken key? I am sure the keyboard hasn´t been hitted by no means.
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Total answers/comments: 6

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bert [Entry]

"Hi Mario,

You can use the guide for troubleshooting the YPG-225 provided by ifixit here. There is a section labeled ""Keys don't produce sound"". If you need the manual for this keyboard, it is here.

If those keys which do not produce a sound are somehow hanging (are lower than the other keys) and are somehow slack, the problem is related to broken keys. They need to be replaced. In this case, you can use this guide here on ifixit.

Just keep us posted what you figure out.

Steffen"

bert [Entry]

"The problem isn't usually the board.. its the rubber contact that either need replacing or cleaning. Clean with pure alcohol.. I use Isopropyl alcohol and a lint free pad like chamois. Don't use cotton bids.

If the fault is on the first octave the part number for the contact is V3413800

Top Octave? V3413700

All the other octaves: V4313600

If it is the board its in two halves... lower half. Pt number is V3414200 and the top half is V3414300

Contact Yamaha in your country and ask for spares dept, In UK the number is 01908366700 You can pay by card.

cheers

Iain (the engineer)

Keyboard Repair Centre, Birkenhead. UK"

bert [Entry]

My yamaha dgx 230 had the same problem too, except, if I pressed it lightly, it sounded as if I were pounding on it. And the bad thing is, it happened to 14 notes, which were the same G#'s and the same D's. But if I press on it normally, it doesn't make a sound. Do u think it has something to do with dust or the rubber pads?

bert [Entry]

"I'm a Yamaha engineer at Keyboard Repair Centre in Wirral.

I have had this fault in the past. It may be the volume control which has gone high in value. If you need the part number then let's know. Its not a difficult job but you need desoldering and soldering skills."

bert [Entry]

Can you use spirit to clean the rubber contact or the circuit board....I also use Yamaha psr e423 and some keys seized to sound and I realized the problem is from either the rubber or the circuit board.. I need help please.

bert [Entry]

"I tried disassembling & cleaning, and more keys ""died"". I found that if I hit the keys over and over and over, it seems to come back to life.

This site seems to offer some replacement parts:

https://syntaur.com/yamaha_dgx.html"