Vintage Synth Repair

On Sunday 04 May 2008 13:04, Philip wrote:
> ah yes tantlum caps...I repair a lot of archaic 70's
> arcade machines like space invaders etc...they have a
> very high failure rate in my experience..
>
> I agree about the re-capping epidemic...the amount of
> time you hear 'you just need to re-cap it' these days
>
> :o)

I'm amazed that there weren't more failures in the Omni,  what with them using 
a 25V cap in a circuit that could potentially see 30V across it.  :-)

> --- Malte Rogacki <gacki@...> wrote:
> > The number of dead op amps I've seen in ARP synths
> > is pretty high.
> > Especially that LM301 (or the variant ARP used)
> > seems to fail regularly.
> > Coincidentally I currently have a MarkIII Odyssey
> > sitting on my bench; and
> > coincidentally the op amp in the S/H circuit was
> > dead there, too.
> >
> > As far as the failure or non-failure of voltage
> > regulators goes: I've had
> > about three or four devices during the last few
> > weeks that had blown
> > regulators.
> >
> > And of course tantalum caps...
> >
> > --
> > Malte Rogacki gacki@...
>
> ---------------------------------------------------------------------------
>-
>
> > "Don't forget to TURN ON THE SYNTHESIZER. Often this
> > is the reason why you
> >  get no sound out of it." (ARP 2600 Owner's Manual)
>
> ---------------------------------------------------------------------------
>-
>
>
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