On Nov 1, 1:54*am, micky wrote:
Can a tv input signal connection at the input coax connector affect
only the picture and not the sound??

I have a 25" Sharp TV, CRT, that often loses its picture, but never
the sound. * (Other than that, the picture and sound are very good.
It's analog and I only use channel 3 and a separate tuner.)

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. * I have a string
attached to the cable. *Usually pulling the string, pulling it
tighter, or letting the string go makes the picture come back. *I wrap
the string around a drawer knob on my workbench (beyond which is the
tv)., sort of like roping a calf and tying the lasso to the saddle
pommel. * This is the closest I've gotten to being a cowboy.

Is it possible that the problem is the co-ax input cable connector or
some part or connection near to that???? * I don't see how a bad
connection that early on can interrupt the picture and have no effect
on the sound.

Or is it just a locational coincidence, and the problem has to be
somewhere in the main circuity, after the sound and picture are
separate????

Or in the high voltage? although I would think if it were the high
voltage, I would see the picture start out small, maybe as a pinpoint,
and enlarge when I pulled on the string and restored the picture.
Instead it just appears on the entire screen at once.

Thanks for any help you can give.

when you wiggle the coax, are you putting any!!!!! strain on the
printed circuit board inside????