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Roland KR-570 ugly sound

Posted: Wed Apr 04, 2018 3:08 am
by rapsternapster
Hi to all !
I need to repair my Piano and Roland KR-570.
It has a problem in the mainboard (or at least I think so).
I need to fix my mainboard or I need to buy a new one. The problem is that I cannot find it anywhere in Internet. So I was wondering if this web is the right place to get the mainboard repaired or to buy a new one.
I already tried changing the STK401-040 module but this wasn't the right solution.
The Fader is OK also.
That's why I think it is the mainboard.

This is the noise it makes:

Thanks so much!