Our Yamaha clavinova CLP-115 is buzzing, even with

This should help you trace the wires

There are a number of fuses on the main power board ( by transformer ) the sizes differ depending on the country of use but are clearly marked on the board.

REMEMBER TO UNPLUG FROM THE MAINS BEFORE OPENING - if in doubt seek the advice of a qualified electrician

Successful repair of my Yamaha Clavinova CLP 880

The principal to replace your contact strip will require one further step to that shown here where the customer has replaced the felts.

When you have the keybed out you will see the contact strip part 220. This is held in place behind the circuit boards. Remove boards, replace strip and reassemble.

It might be worth considering felts whilst you have the keyboard in bits as these wear out.


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It sounds like you have a part overheating and failing, then cooling off and starting again. i would take it into the nearest Yamaha repair facility or contact your local authorized repair to come take a look before it goes out of warranty.

Realize that it MAY be stretch tuned like a real piano. A real piano is tuned increasingly sharp above middle C and increasingly flat below middle C. At the ends, the the off tuning is about 20 to 22 cents sharp and flat. The Clavinova should emulate this. In a real piano this makes it sound better and prevents some cross coupling of harmonics. Read up about stretch tuning on the internet. The Clavinova gets its reference from a quartz crytal oscillator and they just dont' get out of tune.

If you will turn the instrument upside down you will find a date of production somewhere. My CLP-50 has been built in 1985 for example, I discovered in 2006. (I have forgotten the exact location of this date.)

The control panel hinges upwards and you have to move the keybed back a bit to get at the jack. All the screws on the bottom for the keybed. I'm not sure where the ones for the control panel are.

hi...
Your L/R jacks in the back need to connect to the "line-in" connector on your sound card.
I think the jacks on the Clav are 1/4 inch. Go to Radio shack and ask for an adapter that will take two 1/4 inch plugs/cable and convert it to a 1/8 inch stereo plug.
The Midi connects From (keyboard) To (soundcard)
Cables are available at any music store

Hi ...
There are flexible cables that connect the keys to the main electronics. The connectors for those cables sometimes age poorly..
It is fixable. But dont "get taken" on a repair.
If it's just resoldering a few points,it shouldnt be more than $100.00
to fix