Need help troubleshooting Philco 41-265
Perry
stations in the area but lots of bleedover. Not much action at the lower
end of the dial.
I've swapped out each tube one by one (I have several spares of each),
didn't make a difference. The tube "tester" I have only checks continuity
of the filament, so it's limited.
Any ideas? Thank you.
Perry
Richard Knoppow
"Perry" <biffm...@rocketmail.com> wrote in message
news:Xns9CDE61A3A42...@127.0.0.1...
It may just be alignment but I suspect that there may be
bad caps again.
--
Richard Knoppow
Los Angeles
WB6KBL
dick...@ix.netcom.com
Perry
news:2KedncOHKqQLXr_W...@earthlink.com:
Well, it's playing again and I'm not sure why. However, after being on for
a while, it stopped. Turned it off and on, working again. Weird.
Richard Knoppow
Its a bad joint, maybe a cold or crystalized solder
joint, or poor grounding somewhere, maybe a joint that was
wrapped but never soldered. Wiggle stuff around you may find
it.
--
Richard Knoppow
May also be dirty contacts in a tube socket. Clean both
the tubes and the socket with contact cleaner.
Perry
>
> May also be dirty contacts in a tube socket. Clean both
> the tubes and the socket with contact cleaner.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dick...@ix.netcom.com
>
>
>
Thanks for both tips, I hadn't thought about cleaning the tube sockets and
pins.
Unrevealed Source
Just a wild-ass guess -
You might check the rubber washers that hold the tuning capacitor off the
chassis. If one of those is broken down to the point where you've almost
but not quite got a short, you could have a capacitance from stator to
ground, or even an intermittent short. That might explain the lack of
sensitivity at the low end, and also the "on-again, off-again" nature.
Again, just a guess, but I've seen something similar in an RCA table radio.
Acting weird and inconsistent, until I noticed the bad washers and replaced
them. Everything was fine after that.
Jeff