Vintage Synth Repair

Don't do it.  Replace the components with the original type and values.

Electrolytics have both a definite shelf and operational life.  
Currently about 2000 hr.. for the new stuff.

They go bad just sitting and do not have the tolerances necessary for 
some circuits, particularly timing, clock, etc., etc. that you would 
find all over the place in a synth.

Most electrolytics are about a +/- 20% value -- generally close enough 
for power supply sections, but not sensitive electronics.

Regards;

Peter

gil_we wrote:

> They short...
>
> --- In vintagesynthrepair@yahoogroups.com 
> <mailto:vintagesynthrepair%40yahoogroups.com>, Tom Thornton
> <tomthornton@...> wrote:
> >
> >
> > Please,
> > How did you know they were blown ??
> >
> >
> > gil_we wrote:
> >
> > >Would it be safe to replace all the tantalum caps in my OBXa with
> > >regular electrolytic caps (as long as their of the same specs of
> > >course) ?...
> > >
> > >I had 3 blown tantalums on mine, so I went and replaced all 6 that
> are
> > >installed, in various positions, with new tantalums.
> > >
> > >I know these will blown up again in 15 years or so, so would it be
> safe
> > >to replace them all with electrolytics ?
> > >
> > >Thanks !
> > >
> > >
> > >
> > >
> > >
> > >
> > --
> > Tom Thornton
> > Cincinnatti Nbr 3 Morristown NJ USA
> > Madison Nbr 93 Madison NJ
> > ST Johns Nbr 1 Mountain Lakes
> >
>
>  



-- 
Best regards,

Peter C. Bye III                       3M Corporation
Managing Specialist, HPC Systems;      3M Center, Bldg 42-5-E08
High Performance Computing             St. Paul, MN 55144-1000
Engineering Information Technology     651 778 5218 
3M Research & Development              612 720 1477 (Cell)
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pcbye2@... (Lotus Notes)

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