I have an old Toshiba model # CF3066A, and the screen has shrunk , I've tried everything to increase the size, but it seems to be some type of defective part, I can hear the audio with no problems, ex

SOURCE: Toshiba 51H83 51 in. Rear Projection pisture issue

I have a wild guess. I have the same tv and channel 72 is the proper channel to watch tv on. I don't know why, but maybe try channel 72 instead of the usual channel 3. Good luck, maybe a quick fix, maybe not!

SOURCE: toshiba tv - no picture

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=
good luck
please mark the post with a fixya

SOURCE: Toshiba Cinema Series MODEL 50HDX82

Hi

Replace the capacitors(about 10 of them) on the Hyperboard 23148024. This should solve the problem. You can confirm this by heating this PCB when cold to prove that it is causing the problem. The fault will dissappear if you heat the parts that are causing your symptom.

I am more than happy to answer any other questions you may have about it, just give me a hoy :) If you are still unsure, or have problems, then before you give a rating for this advice, please get back to me and we can try some more things.
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

SOURCE: 5-inch black horizontal line across screen

Unplug the tv wait a minute .Plug it in turn it on see if that fix the problem. these tv are computers and can go hay wire.just like a computer ,some times a reboot will fix things for a while.make sure you have a good clean source of power at the receptical and your not having power spikes or drops . Good Luck!

SOURCE: wavy, jumpy picture, ghosts, occasional color loss/change---you name it!

It's the hyper mod board. I've replaced many of these.