Question about Toshiba 57H82 57" Rear Projection Television

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Toshiba 50H72 horz. hold problems, top half of the screen zaggs

The top half of the screen is the worst. The problem is getting worse over time and and when cold.
Is there an adjustment or control pot to tweek?

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Check vertical output ic

Posted on Jan 13, 2009

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Only the bottom half of the screen comes on


Is it Toshiba 50H72 and what does tv show in upper half of screen?
These info will help me to diagnose the problem.
Thanks.

Aug 12, 2011 | Toshiba 50H72 50" Rear Projection...

1 Answer

We have a toshiba projection tv 50H72. we are getting picture distortions of lines verticle & horizontal. convergence has been rest, the only way to get rid of the squiggly lines is to turn tv off...


There is a common problem with this particular model that involves what is known as the"Hypermodle" this is a cuircit board that controls signal processing. The symptoms you describe sounds similar to this problem. This board has 11 very small parts call capacitors,that go faulty over time and get worse with more time. Ideally replaceing this board was the right thing to do in the past however since this was a common occurance the boards quickly became in short supply. Toshiba issued a Service bulliteen to shops on how to repair them. I repaired 2 of them a month at the shop. Now this is a repair that only the most experience tech should attempt. very small parts and easy to damage if not done right. Our shop generally charged around 250 to do this repair. most of the cost was in labor. but always ask if they have done this repair before.

May 29, 2011 | Toshiba 50H72 50" Rear Projection...

3 Answers

Tv screen problem


It can be a problem with the light tunnel, if the upper mirror detached you get half screen.

It can also be a convergence problem, if one of the ICs is defective.

Oct 30, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

I have problems with my Toshiba 50H72 image/ colors, like 3D.


you will need to replace the two convergence amp ICs they are STK392-110 you can get replacement ICs at the following link and they provide free instalation instructions with pictures.Here's the link.
http://servicemanuals.vstore.ca/

Jun 22, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Only half the screen is being projected?


i am having the same issue............any solutions??

Mar 31, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba 50H72 rear projection TV. NO Video


Bad caps and solder connections, especially in around the 9v regulator just about center of the defection circuit... Not a terribly expensive job and certainly worth the repair if the cabinet is in good condition...
Bill

Jan 13, 2008 | Toshiba 50H72 50" Rear Projection...

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