Ancient_Hacker wrote:

Also bad news are those pea-green molded caps with the color bands.
Many Trans-Oceanics have around two dozen of those, all leaky.

I havent seen any major problem with postage-stamp or dipped

There is one variety of capacitor that looks like the silver mica
"postage stamp" type of capacitor with all of the dots, but isn't
a mica at all. It is just a paper capacitor. They are usually
dark brown in color, and fail at about the same rate as normal wax/paper
capacitors.

-Chuck

Don't let the "mica" caps fool ya. I chased an AGC problem for two days
before I found a bad "mica" buried in an IF can. That was the straw that
broke the camels back. I then replaced ALL micas along with every bumble
bee, which, by the way, were all cracked.

--
Regards,
Gary...WZ1M
"Chuck Harris" wrote in message
...
Ancient_Hacker wrote:

Also bad news are those pea-green molded caps with the color bands.
Many Trans-Oceanics have around two dozen of those, all leaky.

I havent seen any major problem with postage-stamp or dipped

There is one variety of capacitor that looks like the silver mica
"postage stamp" type of capacitor with all of the dots, but isn't
a mica at all. It is just a paper capacitor. They are usually
dark brown in color, and fail at about the same rate as normal wax/paper
capacitors.

-Chuck

gkb wrote:
Don't let the "mica" caps fool ya.

Well, your milage may vary. I've clipped out at least a thousand old
wax caps, two hundred plus plastic tubulars, and lesse, three discrete
mica caps, and around eight of those wafer mica caps built into IF can
bases.

Mica's can go bad, they just don't seem to do so very often IMHE.

"Ancient_Hacker" wrote in message
ups.com...

gkb wrote:
Don't let the "mica" caps fool ya.

Well, your milage may vary. I've clipped out at least a
thousand old
wax caps, two hundred plus plastic tubulars, and lesse,
three discrete
mica caps, and around eight of those wafer mica caps built
into IF can
bases.

Mica's can go bad, they just don't seem to do so very
often IMHE.


Well, I've replaced 4 in my JX-17. That does seem unusual
but I think they suffer from the same problem other molded
type do, namely shrinkage of the case. These do not get
leaky like the BB's but become very unstable.


--
---
Richard Knoppow
Los Angeles, CA, USA