This morning the screen on my tv became scrambled and then the t.v. shut off automatically. I unplugged the t.v. and plugged it back in and the same thing happened. You can hear sound but the image is scrambled and the t.v. will now only stay on for a couple or minutes.
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Re: Toshiba HD Projection TV
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
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If it looks 3d or warped its a convergence problem
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
Common Symptoms include....
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Tries tv and box unplug,replug back like an hour later.The box now should have it software updated and tv resetting itself.Tv shoud be working again.Still have the same problems,tv the cause main tv Tuner signal board is dying.Get an estamate from shops and get it repair.
I have seen a lot of sets where the problem only happens when the set is first turned on---99% of the time one of the two STK-392-110 CONVERGENCE chips this set uses is Flakey--intermittant---The only way to know is replace both of the convergence IC's and see what you have---a bad IC can cause the set to shut down---and sooner or later the set will just shut down and not come on at all.
Let me know if you need more information about this type of repair as I have done hundreds of sets with this type of problem----every one I have ever seen where the convergence was intermittent----replacing the two IC's cured the problem.
check for progressive scan and interlaced setting also verify if you have component hook up that it auto maticall chooses your resolution because if your tv is waiting for 1080i and you send 1080p it will not always work and if it expects 1080i and you send it 480i(s-video or rca connection) it may not automatically flip
COMP 1 and 2 are for 480i/p sources. Hook it to the 1080i capable on the back. Also make sure the HD DVR is outputting 1080i not 720p. The Mits can not disply 720p and will show a scrambled screen if you try to.