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Question about Toshiba 57H81 57" Rear Projection Television

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57" Toshiba with wavy green/red lines "good overall picture"

The other day after watching some tv, there were red lines going horizontal across the screen, i tried to converge but the color's are lined up, 2 days after i noticed its now red and green ... the lines are coming out of the bulbs as i checked the mirror and screen and looked inside the bulbs, the lines kinda go in a wave, each color in its own line .... blue doesn't seem to be doing it ... the picture quality is just fine, its just the lines across the screen really ....

Posted by Jason Mcelroy on

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Appears to be a convergence problem, the chips are located on large aluminum heat sinks. Check near the 2 or 3, STK IC's for + and - voltage usually 20 to 25vdc. If 1 or both are missing, check microfuses. They should both be close to equal in voltage reading, if not, turn set off after it has been on for 10 minutes, feel the heat sinks at each IC,if one is hotter than the other, replace both IC's or all 3 if it has them. Now check the small low ohmage resisters in and around the STK IC's and you will most likely find a few burnt or discolored and have changed in value, replace these or the new chips installed will self destruct.

Posted on Jun 29, 2007

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