Hi there,

I have a Toshiba TV model number CF30D50 (January 1995) that works
fine for the most part except for an annoying problem. On startup (and
after 30 min. or an hour of being on) the screen goes dim (90% darker
than normal) and the only way I've found to get it back to normal is
to hit the right side of the casing really hard. Not the top or the
left, but the right side as you look at the screen.

I've done a search on Google and Google Groups to no avail. I've found
people discuss problems with this TV, but nothing similar to my
problem.

Can anyone suggest what may be causing this? While not in the repair
business, I'm quite comfortable with electronics. TVs may be out of my
league, though.

Any help/idea/pointers would be appreciated.