Question about Toshiba 62HMX84 62" Rear Projection HDTV

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I have flickering horizontal lines...Is it the bulb? I have not replaced it in 3 years.

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Flickering horizontal lines are cause sometimes by the mirrors or the DLP chip then you might have to replace the mirrors because they might be dead hope this helps

Posted on Jan 02, 2011

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After a period of time, vertical lines appear on the screen. Looks like jail bars. Sometimes turning the TV off, then back on will clear it. All channels. I replaced the projection bulb about 6 months...


no solution, same sounding problem though. last year we were getting lines through the screen and flickering and then the bulb burned out. had it replaced, 2 months later it did it again (they wouldn't stand behind the bulb so we had to buy a whole new one) this time had the bulb and ballast replaced because the repair guy said usually you have to replace both (why didn't they replace them both in the first place?) .. a year later and it's doing it again.. we get the flickering of the screen going on and off and horizontal lines that flicker across it. after turning the TV off and on a few times it seems to go away (or after it warms up)

i know know if i should order another bulb and ballast and spend the money for it to happen again or if it could be something else

let me know if you find a solution.. carolynspranger@gmail.com

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1 Answer

Video flickering


Horizontal lines are either caused by the main logic board, a dammaged screen or by the main x and y drivers. Hard to determine which one it is, but somthing is getting hot which is causing the problem. My guess is the main logic board.

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This is the problem I had with a couple of my projectors, one of them I just replaced the bulb and the other needed whole new brains (controller board)

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maybe ur screen was put into a lot of magnetic interference. so check for any magnetic rays emitting devices like speaker adapters etc. a simple check would be to degauss( its in the screen properties). raja

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1 Answer

Flickering horizontal lines


sounds like a problem in the horizontal deflection circuit.possibly a solder problem. try re-soldering the horizontal transistor, line coils and yoke pins.

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