Question about Zenith IQB50M90W 50" Rear Projection Television

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Wont turn on

Turn it on it turns right off

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Check and make sure all of the lights in the power supply are comming on. if not then you have something shorted and open fuse. if they come on and go off then try the link below.

Posted on Apr 09, 2009

  • Scott Henderson
    Scott Henderson Apr 09, 2009

    I just fixed to of these sets. Look at and solder all solder cracks you can see. specially T703 next to the Flyback or HVT.


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No power

Does it make any noise? I just fixed mine, it was a bad solder joint, Unplug the TV and take off the back, about 12 screws. Make sure its dark and plug it in and see if you see any sparks and unplug right away.. Mine did, I re soldered the bad joint and it turn right on. Been on for about an hour now, working perfect!

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The first thing to try is unplugging the set from the wall, then plugging it back in after 20 seconds or so. Sometimes the computer inside the TV gets confused and this will reset it.

If the problem continues, there are a lot of potential causes, all of which would mean locating and replacing the defective parts. It would be best to call a professional service technician to check the set and give an estimate.

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Check the pins with a strong magnifying glass to make sure they are solderd correctly with none of the pins bridged with solder, then recheck all the wire connections to make certain they are correctly hooked up.

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