When I wrote that reply, I said to myself oops, I should have said I
test them out of circuit and with the highest range ohmmeter. BTW, I
use an old Simpson 260 to do this test in the RX 10,000 scale.
I look for a meter deflection from short circuit to a very high range
final reading. Then I reverse the leads and look for a sharp Kick of
the needle with a final reading in the same high range. Similar to a
diode test. Of course, looking for very high resistance in both
directions. It has worked over the years without failure (no pun
intended).
K2WH
--- In HallicraftersRadios@..., "Ed Hatcher" <eh_54@y...>
wrote:
Thanks Bill, whenever I post it's to everyone or I'd go direct.
You're ideas are interesting but it raises another question for me:
you're checking them in-circuit, not removing them, correct? And
you're using the highest range of your VOM/VTVM ?
--- In HallicraftersRadios@..., Bill Gerhold
<k2wh@o...>
wrote:
I do not know if this is addressed to the group but here is my 2
cents. I
never really bother to check capacitors
except visually looking for obvious damage. If that was OK, and
something
was not working, I then check
them with a high resistance ohm meter. If that's OK, then I
leave
them
alone, even the black beauties.
I know this is not the proper way to test for bad caps and others
will
probably cringe when I say I leave the black beauties
alone but, when you have little time to do this, and the radio
works
satisfactorily, I say leave them be. So, no real science here
checking capacitors. Just common sense.
Any others with capacitor check methods?
K2WH
_____
From: Ed Hatcher [mailto:eh_54@y...]
Sent: Tuesday, March 29, 2005 1:44 AM
To: HallicraftersRadios@...
Subject: [HallicraftersRadios] Capacitor testing
What are you using when testing: ESR meter, capacitance meter,
or?
What are your standards/values for replacement?
Thanks,
Ed
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