On 1/11/2011 7:06 PM, micky wrote:
On Tue, 1 Nov 2011 07:24:03 +0000 (UTC), "Geoffrey S. Mendelson"
wrote:

micky wrote:

The picture can be restored by bending the co-ax TV input cable one
way or the other. Sometimes this lasts for days at a couple hours
each day. Other times it lasts for 10 seconds.

Have you tried replacing the coax? It seems to me for a couple of bucks,
you can avoid a lot of effort if it works.

I've replaced it in that the guy who gave me the tv had the very same
problem with his coax and his location.

The antenna connector could be loose, or corroded. If you have any DeOxit,

I can get it or something like it.

put a drop on the end of a toothpick and clean the center contact of
the antenna socket. If it's an F connector, which is designed for bare
wire as the center contact use something thinner, like a bent paperclip.

Yes, an F-connector. Okay, I'll do that, but is it really conceivalbe
that a bad connection there will affect the blank out the picture but
leave the sound undamaged? I hope so.

In my experience, as the signal level is reduced on an analogue CRT
television, first the picture becomes grainy, and then, as the signal
gets worse, the picture becomes unstable as well. There is no particular
level at which the picture is gone, it just merges gradually with the noise.

Sylvia.