Anonymous Posted on Aug 30, 2009

New lamp turns on flashes 7 times

Installed new lamp unit had bad power supply board replaced it and now powers up green. screen lights for about 10 seconds then shuts down and flashes 7 times. unplugged for awhile tried again same results.....nothing is hooked up in read of tv... 7 times = audio problem... audio worked fine originally.. went over my installation of pwr supply board. looks good.... any suggestions for next step thanks in advance...kevin
....foot note this is my personal tv... you know how much we hate to work on our own stuff...

Anonymous Sep 08, 2009

well after more research i found the au board... audio amplifier board bad the tda ic in short condition... removed board and now it will light up green status and stay on .. lamp burns screen is white with a red pattern.... don't know how all these failures came from but now i have to look into the video section... any suggestions
Anonymous Oct 21, 2009

YES YOU ARE CORRECT.. EXCEPT THIS SICTUATION BEING HARD TO DESCRIBE,,, THE LAMP STARTS AND FULLY LIGHTS TO SPECS.. ALL THOSE CIRCUITS NOW CLEAR... THE SCREEN ILLUMINATES WITH A PATTERN... WORKED FOR A LITTLE THEN ONLY THE PATTERN.. I,M GUESSING THE VIDEA CONTROL BOARD HAS FAILURE THANK FOR THE SUGGESTION

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Anonymous

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Posted on Oct 21, 2009

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Just replaced lamp and power light goes green then orange and starts to blink 3 times

Richard C Cohen

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Posted on Sep 08, 2009

Richard C Cohen

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Just a thought...you *might* have a bad ballast in addition to that defective power supply.That flashing could be the ballast trying to ignite the lamp. A lamp is just like an enclosed welder's arc. The ballast generates a high-voltage spark to initially start the lamp, then low voltage with high current keeps it burning. If you look into the lens and see "lightning" flashes but no lamp ignition, that's what's happening. The ballast could've been damaged by the defective supply. Also, try a known-good lamp...just to rule out a defective new one--in the shop, we kept all old working lamps as testers.

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