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Repair Assistance Hey Guys, I have a problem with my Toshiba Projection TV. I get sound on it but no picture. I have removed the screen to look at it and from observation of the projectors, the one on the center and the right want to light up when you turn on the TV, but the one on the left does not do anything. I have tried changing circuit boards, wires, etc., but cannot get it to work. Can you please help diagnose the problem and get back with me, please! Thank you! Lupe P.S. Email me at

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Re: Repair Assistance

You have a problem in the drive circuitry for that crt. Do the heaters in that tube light up when power is applied? What model Toshiba do you have? Let me know I will try to find out some info for you.

Posted on Jan 20, 2008

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My toshiba projection tv just started having problems. at the bottom of the screen the colors are not alignedand words and pictures are duplicated at tbe bottom of the screen

Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
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Good Day, pieps57;

Corrective Action: Remove the MVUP13 Hyper Module from the TV chassis, remove the top shield and replace the 10uf, 16v capacitors using Part Number 24619040. It’s recommended that all of the capacitors identified be replaced (Note: These capacitors are low impedance surface mounted aluminum electrolytic capacitors. Care should be taken to avoid damaging the PCB while replacing these capacitors.) CAPS: cx178, cx221, cx230, cx241, cx250, cx261, cx270, cx541, cx670 & c514, c5030.
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If it has to ba some kind of specific frame on it you miahgt have to "hack" it, and it might not be that pretty. If it's just a screen fastened inside a frame, kind of like the glass in a picture frame you can get one in the same size, or a bit bigger and cut it down to size yourself.

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1 Answer

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