Question about Toshiba 57H82 57" Rear Projection Television

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Screen blank except for horizontal flat line - sound ok

Toshiba 57H82 projo. Based on research, part with problem appears to be the vertical video output card. I am having a hard time locating the part number so i can order it. Any suggestions?

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YOUR TV WAS ASSEMBLED IN LEBANON TENNESSEE THERE IS A NATIONAL SERVICE DEPTMENT AT THE FACILITY.1-615-444-8501

Posted on Mar 03, 2009

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Toshiba projection tv model 57H82 color convergence is off. tried the TouchFocus and get and error. tried manually but the red will only move up and down. i need it to move left and right.


OK, the problem is one of the STK392-110 convergence amps has died. It is rare that both die at the same time, so either vertical or horizontal will go out, but not both. Also look for an open fusable resistor near said IC.

May 28, 2010 | Toshiba 57H82 57" Rear Projection...

1 Answer

Distored picture


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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Sounds like the Hyper board is needing replacement very common problem for toshibas.

Dec 27, 2008 | Toshiba 57H82 57" Rear Projection...

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Cover green CRT lens with towel and see if red/blue video is normal......= bad CRT ?.............................T.

May 09, 2008 | Toshiba 57H82 57" Rear Projection...

1 Answer

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something fried .. sounds like the vertical has gone ,
call a tech.

Mar 07, 2008 | Projection Televisions

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Jan 17, 2008 | Toshiba 57H82 57" Rear Projection...

1 Answer

Had horizontal Lines replaced now have error 21 xray circuit


White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
Severe vertical jitter on picture, horizontal sides of picture ragged
Replacing the TDA4950 cured the fault
White line down centre of screen (top to bottom}
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1 Answer

Lines on tv


Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok

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