Question about LG RZ-42PY10 42 in. HDTV Plasma

2 Answers

I have a LG RZ-42PY10 42Plasmareen which changes to red after 10-

I have a LG RZ-42PY10 42" Plasmareen which changes to red after 10-15 mins and then turns off.What could it b?

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  • arnaud73 Aug 26, 2009

    I have a LG RZ-42PY10 42" Plasmareen which changes to red after 10-15 mins and then turns off.What could it b?

  • arnaud73 Sep 07, 2009

    Hello there,

    I removed the back cover and powered the unit up. Neither if the fans is functioning. I can trace these back to a small (regulator) board to the lower left of the chassis.
    Does this offer us any clues?

    arni


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2 Answers

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  • Master
  • 1,869 Answers

This is a cooling problem; the i.c. "chroma" chip is cooled by the use of a silicone cream (this can be purchased at Radio Shack stores or; online; and, fans (if the temperature gets too high the tv will;by design: shut off for safety, so; first: check to see that the fans on the back of your tv are not blocked with lint or, not running at all (listen / feel) then: if you feel confident; open the case and, observe the fans; check the temperature of the chips and, the condition of the cream (must not be dried out) unplug first! you can also use component cooler freon to spray the chroma chip to cool it while it runs; be carefull! while the tv is plugged in! Hope this helps!

Posted on Aug 26, 2009

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  • Master
  • 8,619 Answers

Hi

Thanks for using FixYa. The red tint on the screen is due to a bad lamp or a faulty inverter board. It could also be a dry joint somewhere in the drive electronics. Lamp faults are often intermittent as they can be dependent on temperature among other things. This can make internal shorts come and go. Service Engineers will often take the back off the set and gently tap the neck of the tube to prove or disprove the lamp problem.

Please get this checked as disassembling the tv could be very dangerous as it has very high charge even when its switched off.

Please do accept the solution if the issue is resolved or else revert for further assistance.

Thanks
Rylee

Posted on Aug 26, 2009

  • Rylee Smith
    Rylee Smith Aug 26, 2009

    Hi



    There is an internal short on the circuit board of your tv & due to this the tv screen first turns red and then after overheating(due to short circuuit on the board) it turns itself off. However, these kind of short circuits on display board cause the lamp to go bad.



    Please do accept the solution if the issue is resolved or else revert for further assistance.

    Thanks
    Rylee

  • Rylee Smith
    Rylee Smith Sep 07, 2009

    Hi Arni



    If you can't see the fans moving and neither anything appearing on the screen then due to shorted connections and which resulted in overheating of lamp. Further checking the TV circuit is not advisable as i have earlier told you that the TV contains very high voltages even when its switched off and fiddling with any unknown part/circuit can be fatal.



    Please do accept the solution if the issue is resolved or else revert for further assistance.

    Thanks
    Rylee

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