Bob wrote:
My 24" Sharp TV periodically turns dark. The way I get it to come back to a
normal screen is to smack it real hard on the side of the cabinet. It will
then be all right for a week or two then it happens again and then I smack
it again. What is your opinion of this problem, is it on its way out, and
is it worth repairing.
Thank you all for your help.



"Periodically" -- like once an hour? Or do you mean "sporadically" as
in random and unpredictable?

Does the sound go off at the same time?

If you normally hear a high pitched squeal up close to the set when it's
functioning normally, does this change when it goes off? If the
horizontal oscillator stops, the high voltage will stop as a result.

Do you hear a sharp snap when the set comes on or goes off?

Does the set "bloom" (get bigger, dimmer, fuzzier) as it is failing?
What's it look like just after you wrap it up the side? How long does
it take to recover?

And, ahem, is the wall plug solid?




If you look in at the neck of the pix tube, can you see the filament
glowing?