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Insignia lcdtv32 poewr on but no picture

Power led turns blue when turned on but no picture still black...checked all caps there fine ....theres two different boards to this tv,,brown board and green i have the green..... I have the same problem with a 27 inch Insignia NS-27LCD
Turned it on one day last week and no picture no sound.
Screen is black.
The only thing that happens is the power LED changes to blue
when its turned on and red when its off.
I checked the fuse and its good.
I unpluged it for a day and nothing changed .
The TV is only a year and a half old .
Thanks for any assistance

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  • B-rock32 Apr 30, 2009

    my tv does the exact thing just wondering if anyone was having the same problem or what you did to resolve it. any help would be appreciated please!!!

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  • Master
  • 1,779 Answers

You need to check the 12 or 24v source coming from the power supply to the inverter board, that's the board usually to the left and rather tall. Get your meter set, then turn the set on and see what happens, if the voltage comes up and then shuts down, you'll need to pull the plug for the inverter and measure the voltage again. If it stays up you have a bad converter board, if not then it's in the power supply, that's good old fashion trouble shooting from there on.

Posted on Feb 26, 2009

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I would be naturally curious of the no sound symptom but the no blue light makes this puzzle even more of a challenge.
This unit has some VERY poor power supplies in them, in particular three caps E919,E920 & E921 (680uf/35v) usually fail causing a complete dead condition. But there are also a total of 16 caps in various areas of the supply handling low voltage sources for various other areas of the TV and it would be my suspicion that one or more of those has failed and you might not be too far from a complete failure of the supply when the main three 680uf caps finally short. At least I'd start there...
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check out this posting on fix ya, i just fixed my tv this morning.

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