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Lg 42 LCD tv Works fine for about 10mins the loses input display and tv info goes fuzzy. Sound is ok tho

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  • Master
  • 933 Answers

THERE COULD BE SEVERAL THINGS CAUSING THIS, YOU WILL NEED TO GET A DIAGNOSES BEFORE ATTEMPTING TO REPLACE ANYTHING.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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SOURCE: no signal display on rca 42" lcd

If you have tried other input jacks and cables with the same result, then yes, the input/output board is defective or buggy.  Sometimes a power drain can clear this up as well so it's worth a try:
1. Unplug the product's power cable so the device is not grounded to the house. 2. Press and HOLD the product's own power button for 1 minute to drain the capacitors. 3. Plug the product back into a wall outlet and try to turn it on.
Note: This procedure works with battery operated devices as well so remove the batteries and hold down it's power button.  Electricity can remain in capacitors and on circuit boards enough to prevent normal functionality. By clearing the residue electricity, your product will have a fresh start and many times this will resolve a buggy or non-responsive device that appears to be dead.
If this doesn't resolve it, service would be necessary.

Posted on Mar 25, 2009

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SOURCE: lg 42 inch hdtv lcd dont know pass code to unlock tv

Enter the password "7777".

Posted on May 28, 2009

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SOURCE: lg lcd tv screen goes

I had this problem on my 42" Philips. Just got it yesterday and worked fine on the tv stand. As soon as I mounted the TV to the wall via wall mount system, I had the exact same issue you did. Figured it out today.

The wall mount was putting pressure against the center of the back of the tv (tv set had a slightly rounded back plate, and the mount was a flat plate). As soon as I put spacers (part of the wall mount hardware set) between the wall mount braket and the tv so there was no contact except at the mounting holes, the tv worked fine.

My theory is the pressure pushed the tv back plate against some board components which caused them to overheat (no air flow); or put pressure on internal connectors. I dont know.

Hope this helps, may not apply to your situation.

Posted on Sep 18, 2009

  • 1 Answer

SOURCE: the tv sensor is not working on my 42" lg lcd hdtv

Believe it or not...THIS WORKS!!!! 

 Look on the back of your set for an external remote jack. It should be the same size as a small headphone jack. If it has one, use a spare headphone plug or your headphones, and plug them in and out about 50 times. This will clean the tarnished contacts and make your remote sensor start working. Your remote sensor goes through a switch on this jack.

Posted on May 04, 2010

info33
  • 72 Answers

SOURCE: LG 26LC7D LCD TV that turns on, but no pix

Here is a link for the manual - it might help - http://tv.manualsonline.com/manuals/mfg/lg/26lc7d_26lc7dc_32lc4d_42lc4d.html

Posted on Jul 03, 2010

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