"Unrevealed Source" wrote in message
...
I've posted a picture of the underside of my RCA 9X571. My questions is
about that big black tube running diagonally in the picture.

According to the schematics and the SAMS under-chassis view, this is labeled
as capacitor C11 (I think .02mfd, it's not in front of me right now) and
resistor R11, a 10meg 1/2 watt resistor. Upon close inspection but without
tearing any of the black plastic covering, it look like it is a red coil of
stiff wire, with the black plastic tube vacuum-formed around it. I'm guessing
this might be the resistor itself, some kind of wire-wound low wattage
resistor? Why would they have used that? And, it looks like the capacitor
is inside the tube! If that's the case, would there be a technical reason
to put the cap inside a wire-wound resistor? One end of the resistor goes to
chassis ground.

I haven't poked around and traced everything out yet or really examined the
circuit , but has anyone seen anything like this?

Jeff



Jeff,
Looking at Beitman's schematic, I see that C13 (0.02 uFd) from the volume
control wiper to V3 grid is shielded. Looks like that might be what you're
looking at. The black plastic-covered tube around the capacitor is the shield.

--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

"In theory, there isn't any difference between theory and practice. In
practice, there is." - Yogi Berra