Picture goes black on and off but sound still on

This could be a sign that the picture tube is starting to fail. To prove this try the following: Please note that there are potentially dangerous high voltages present inside the set, so be careful.

Unplug the set and remove the back. Locate the flyback transformer (lower right when facing the back of the set and has a lare red wire coming out the top.) There should be 2 controls on that part. One should be labeled screen the other focus. Turn the screen control slightly clockwise. Turn on the set. If the blanking stops, then this will "fix" the problem for a short period. This is not a final fix, but a short tern remedy to give you time to locate a replacement set.

If the above does not resolve the problem, please update this and we'll investigate further.

Thanks,
Dan