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micky micky is offline
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Default Good sound; intermittent picture.

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.