Question about Toshiba 50H82 50" Rear Projection Television

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Red lines Ive got a Toshiba 50H82 rear projection. It is displaying red horizontal lines on the screen? Any solutions or input out there? Thanks

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If you go to a n unused input ie ( video1) and the lines are there , it is a bias problem with the red pix tube. either the tube is bad or the sceen adjustment is up too high.

Posted on Jul 24, 2008

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sounds like to me that you need to replace the convergence IC's.

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Well, if your horizontal is off frequency and you have diagonal lines then there's no need to look at the Horiz Output Transistor or the Vertical section. You will have to use your scope to check the oscillator freq. and go from there.

Jan 14, 2010 | Toshiba 50H82 50" Rear Projection...

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RED HORIZONTAL CONVERGENCE OUT.INSTALLED NEW STK 392 110.SAME PROBLEM


Please check does STK IC getting +22 and -22 volts supply to work properly, check pico fuses that might blew off / open, replace it and check.
Thanks.

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1 Answer

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Oct 03, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

No video on a 50H82 Toshiba Projection


If the screen is lit, then there is high voltage. If there is no video, and the screen is lit, then there is a loss of video. The fault can be anywhere along the main video path before it gets decoded in to the red, blue, and green compositions.

If the screen is not lit, most likely there is a high voltage failure, or there is a failure in the bias supply for the tubes.

When there is a loss of high voltage, this can be from any of the components in the high voltage area. Some of the main things that go defective are the flyback, high voltage multiplier, and various other small components.

Have you considered to replace the set with a good Plama or LCD set? This repair may end up being on the expensive side.


Jerry G.

Mar 10, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

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http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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1 Answer

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RED GUN OK, you need convergence IC's replaced = Toshiba
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Nov 14, 2007 | Toshiba 50H82 50" Rear Projection...

1 Answer

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STK392-110T X 2 in TOSHIBA , Do not use generics.If you
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1 Answer

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THE PROBLEM IS THE SAME AS I HAD PREVIOUS,A PROJECTOR BULB HAS GONE ON THE RED PROJECTOR,YOU PROBABLY HAVE YOUR SOLLUTION BY NOW I HOPE SO ANYWAY.

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