[sdiy] OT: MKS-20 Service Notes

[Michael Bacich]

On Dec 27, 2006, at 8:24 AM, Gavin Muir wrote:

> I've got an intermittently fuzzy connect on one of the stereo  
> channels (all outputs) that I need to backtrack and find (AAARGH!),  
> plus I think I also need to make some adjustments to that BEASTLY  
> effects board in there, and don't want to start tweaking until I  
> know what Roland wants to see at all of those test points! ;-)

Gavin,

You have a bad output relay,  It's on the effect board, and it's  
pretty obvious which part it is -- it's the only relay on there.  The  
relay mutes the output until the CPU and everything else are ready at  
startup.  Trust me, this is what's wrong with your MKS-20.  I've seen  
this too many times to tell.  Replace the relay (about $5.00), and  
you're back in business.

Michael Bacich