Question about Toshiba 50H72 50" Rear Projection Television

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Toshiba 50H72 When the tv is cold started, the picture is wavy and then goes blank. There is still sound. No bad smells.

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Re: Toshiba 50H72

I have one of these would you be willing to repair, i already have the board disconnected from main board. LMK.

I can be reached @

Posted on Sep 01, 2008

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Re: Toshiba 50H72

The Hyper Module Is Defective / It Is Located Behind The Jack Panel On The Signal Board.
More specifically the 11 16v/10mf caps on that board need to be replaced... Not expensive, I do them for under $100.00 dollars..

Posted on Feb 03, 2008

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I have a toshiba model 50h72 double vishion

Projection sets have two very common problems.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Nov 12, 2008 | Toshiba 50H72 50" Rear Projection...

1 Answer

Picture gone.

You have bad conv. ic's.On these sets when the ic's go bad it will usually pop a fuse or burn up a few safety resistors,causing ith video to go away.

Mar 03, 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...

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

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Toshiba projection tv 50 inch

Need to test F470 and F850 for open.. Simple continuity to see if either fuse is open.. If F 470 is open replace it and C884 and if F850 is open you probably you may need to replace the two convergence amps STK392-110... Large black Ic's screwed on an aluminum heat sink...

Dec 16, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba 50H72 50 in. Rear

possibly the STK392-110 ic's? it seems like it is the vertical convergence.

Nov 28, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Toshiba Rear Projection 42 "

Nov 23, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Pictue problem

One of your convergence output IC's has burnt out and needs to be replaced. When the IC that handles the Red Vertical (RV) channel goes bad then a small low-value resistor usually burns out with it and the red color will sag inwards at the top and bottom. If you have no experience in repairing and realigning convergence circuits then allow a qualified tech to handle it for you.

Jul 07, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Wavy Screen on Startup

I gather from your post that wavy can mean two possible things as the TV comes on, you see the picture flow like ocean waves? In this case you may have 60Hz hum modulating with the picture, this is actually unlikely these days, but I have heard it happens sometimes. The other thing it could be is light horizontal tearing. This happens when the horizontal frequency is too high or too low. You are not going to like my solution because I feel that for problems like this the set must be analyzed not just subjected to "shotgun troubleshooting", so here I go, Take the TV to a repair shop.

Feb 28, 2007 | Toshiba 50H72 50" Rear Projection...

2 Answers

Wavy picture

this is caused by a bad convergence module, and there are probably some dried out electrolytic caps in the circuit as well. i have one in the shop right now that came in with the same problem. if you have it serviced, make sure they replace all of the convergence modules (there are usually 2, but sometimes 3 of them), because if one went bad the other(s) is likely to go out soon as well.

Jun 28, 2006 | Toshiba 65H82 65" Rear Projection...

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