[sdiy] Reasonable cap replacement policy

MTG grant at musictechnologiesgroup.com
Thu Feb 6 19:56:33 CET 2020

I'm starting to see a lot of failures on Yamaha units with switching 
power supplies. Basically all the hits from the 80's. On the items I've 
fixed, I replaced the electrolytics on the PS, but not the various 
"main" boards. YMMV.


On 2/6/2020 10:14 AM, John Speth via Synth-diy 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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