Kawai Synthesizers

You can find the OS version by pressing System button during power on.

Try to send to the instrument proper SysEx data file.

If it doesn't help, it's time to open it and check inside.

Try to disconnect, clean and reconnect all connectors, reseat all IC's  
in sockets... This can help if it's just the oxidation.

Then check electrolytic capacitors, if some are bad, change them.

Check the PCB for cracks, or if there's nothing inside, some piece of  
metal or so which can cause short circuit...

If it doesn't help, it's time for more detailed checking but it needs  
proper tools and knowledge.

I couldn't find service manual, only not so good schematics...

Daniel Forro



On Jan 2, 2016, at 4:13 PM, domgoold@... [kawaisynths] wrote:

> update: i tried a different K1 PSU that i know to be good, no  
> difference,
> so that's ruled out. stll making horrible glitchy sounds(some are  
> quite
> good but..not what i want)
>
> no reply from kawai tech yet.
>
> so next step is disassembly+examination.
>
> if it's one of these big ICs, that's bad news. what could be done  
> there?
> or do i just flog it for parts? great shame, it's in such good  
> condition.
>
> wonder if the modern day midibox whizz's could do anything with a
> digital synthesizer like this?
>
> first want to try to get some normal behaviour out of it, it is  
> useless
> like this :(