[sdiy] Disassembling MKS-70 Power Supply
sounddoctorin at imt.net
Mon Nov 3 07:13:55 CET 2008
I don't recall off the top the circuit details but common problems are
regulator solder joints on those. If it shuts off after a few seconds
that MIGHT be the problem.. On the other hand could be some leaking
electrolytic or something. But you have to pull a few things out as I
recall to get that board out. Get under there and verify the solder
before you go to a lot of research time though and I'll bet you'll find
the problem. If you have an esr meter it's nice to check the caps. -Bob
Csaba Zvekan wrote:
> Hi Group,
> My Roland MKS-70 (SUPER JX) 's power supply is failing . After two
> seconds it shuts off. I am suspecting capacitors on the power supply
> board. Can anybody tell me an easy way to get to it. Before I make
> some stupid mistakes?
> It looks like I have to loosen the VOICE boards that are on hinges ,
> right ?
> I googled the MKS series and they seem to be a bit flaky in age.
> Also maybe one of you knows already the problem. What's the deal with
> the sensing in the circuit ?
> Any help greatly appreciated
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
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