[sdiy] Reasonable cap replacement policy

Jimmy Moore jamoore84 at gmail.com
Thu Feb 6 19:27:09 CET 2020

Not a tech or EE but as I understand it caps start to get electrically
leaky after 30+ years.  The overwhelming advice I've seen has people
recommending to recap critical sections (power supplies) for older synths,
but I don't know enough to say whether process control has improved enough
from the 70's to 80's to change the recommendation for 80's gear.  I doubt

How many electrolytics are there?  It could be a fun project.

On Thu, Feb 6, 2020 at 11:18 AM John Speth via Synth-diy <
synth-diy at synth-diy.org> wrote:

> Hi folks-
> Today I called a shop about replacing the belts on my 30 year old
> cassette tape deck (Fostex X-26). The guy quickly recommended also
> replacing the caps (I assume just the electrolytics). I'm guarded
> against folks who do repairs on stuff that don't show signs of need,
> which my tape deck doesn't.
> What are the prevailing opinions on replacing old electrolytics in
> equipment from the 1980's?
> I hope I didn't start an opinion war.
> Thanks - JJS
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