[sdiy] Korg Delta problem

[Jean Bender]

Well i finally had time to open it up.
First tests show that both regulators work. I have +/-15 (14,67 in reality).
Everything seems ok except one condensator on the power regulators board :
one of its legs is corroded. I gonna change it.

Will come back once deepest investigations.

Best !
J.

Le lun. 18 juin 2018 23:50, Dave Brown <davebr at modularsynthesis.com> a
écrit :

> It could be tin corrosion.  It can exhibit itself as temperature
> sensitivity
> and the synth is old enough to have tin issues.  Tin on tin connectors will
> eventually fail.  Simply reseat every connector and IC that is in a socket.
> The wiping action will give you a new tin surface.  Just make sure you
> don't
> fold a pin under when inserting an IC.  You actually don't have to pull
> them
> all the way out of a socket, but just enough that the new insertion will
> clean some tin.
>
> Dave
>
> > -----Original Message-----
> > From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of
> > Jean Bender
> > Sent: Monday, June 18, 2018 12:43 PM
> > To: john slee
> > Cc: Synth-diy at synth-diy.org DIY
> > Subject: [sdiy] Korg Delta problem
> >
> > Hi !
> > i just got a korg delta, but it seems to be a bit tired.
> > Once you start it, it works as a charm, no probs, but if you wait one,
> > two hours, even if you are outside, with sun or no, the synthetizer
> > part stops by itself.
> > All four voices shut down, but i still can use the string part.
> >
> > It looks a lot to me as a temperature problem, but if i open it,
> > nothing seems to be broken or something.
> >
> > Where should i look at first ? Would it be a cap problem in the audio
> path
> ?
> >
> > Any help would be greatly appreciated.
> > Thanks !!
> > J.
> > _______________________________________________
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> > Synth-diy at synth-diy.org
> > http://synth-diy.org/mailman/listinfo/synth-diy
>
>
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