Kawai K1 rII

Hello,
I have a Kawai K1 rII instrument. Unfortunately, it's broken. Makes very strange noises, does not hold tuning. I found a very similar problem on the internet. the Kawai KTG-001 processor is broken. Are these parts still available?
Pozdr. Mirek

[michaelkunz]

Dear Mirek,

sorry, but there are no more spare parts available for the K1 series products after more than 25 years.

If the tuning changes strangely, it could also be the xtal circuit that generates the main clock signal. I'd try to change that, too.