Capacitor is use in many different area for filtering for doubling Voltage
for passing signal through.
I will assume that this capacitor is in filtering circuit and as one
gentlemen outlined it, I would
say it was bad Cap. The higher voltage actually it should add reliability,
but reversing polarity
in the filter circuit, it will short out and that will happen almost
"dpb" wrote in message
I know there are some electronics guys here; I'm a nukeE by training w/
not much other than a basic circuits kinda' electronics background so am
outta' my knowledge area here...
Had an old ('69 vintage) receiver refurb'ed and the output coupling
capacitors which were replaced failed after only a couple of months.
The fella' who did the work has been doing this since '83 or so and says
it's the first time in his experience he's ever seen such a failure.
The schematic calls for 2200 uf/50V; those installed were actually 63V
instead of 50V. Per his usual practice, he replaced them with 2200
uF/80 V/(I don't know temp rating I realize).
The originals were ELNA CE-W but I have no idea what their actual spec's
might have been.
Anyway, the question is, anybody have any insight on what would be a
reliable replacement for the originals with a likelihood of surviving
more than a few months?
I debated putting the originals back in as they weren't the actual
failure point but electrolytics tending to degrade with time after 40
years seems that would be borrowed time, too...