[sdiy] OT: MKS-20 Service Notes

[Bob Weigel]

Yup precisely.  That was the problem with one I worked on as well.  Not 
really much else to go wrong in those since they are mostly digital 
circuitry.  -Bob

Michael Bacich wrote:

>
> 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
>
>