Mend Korg C-35 Pianos

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Korg C-35 Concert Piano, power but no sound?

I have a C-35 Concert Piano. The power comes on, the speakers pop, the lights light but there is no sound. No output from stereo outs and no output from phones. Help anybody?

Kit Kelly
February 2009

Korg Korg C-35 Musical Instruments, Pianos Korg Piano No Sound

I have found bad surface mount capacitors that leak and eat the circuit board area around them. I have been able to replace all the small surface mount caps and make these boards live again.

Overkill audio inc
April 2010

Kit Kelly, I am a tech in southern Florida and I have come across several of these pianos with this problem. The problem is in the mixer/preamp board, No longer available from factory. I have been able to find the bad parts and bypass them, but it only buys the owner a few more month. Technical answer, Check IC 12, Q1, Q2 or the capacitors around IC 12 on the mixer/preamp board ( KLM-1546) the board with the MIDI outputs on it. I find the last good signal area and connect it to the first good area of the preamp area going to amplifier. I personally owned one of these and just last year I had to put it down :-(

Schultz Services
July 2009