Question about HP PL4260N 42 in. Plasma HDTV

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Tv turns on but no picture. Then Tv shuts off by itself.

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  • Jim Krause May 11, 2010

    I need a Make and Model # please?

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Try turning it on again and quickly press the source button several times until the source menu on the screen appears. Keep trying this method, and if the tv does not do anything then it needs to be serviced. If the tv turns on and functions normally after this wacky method then your power supply is developing a problem....its probably a bad capacitor or TO style diode.

Posted on Feb 26, 2009

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After running for a few minutes the picture abruptly shuts off and turns back on for a few minutes then shuts off. This cycle repeats itself over and over.


Make sure the top and back of it are not dirty or obstructed, it sounds like it is overheating and shutting down to protect itself. Or your main power board is going out.

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Probably the power supply is failing intermittently, just shutting down without affecting picture or sound.

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The fault is with its main board itself. Troubleshooting to this board is not an easy work to a user can do. It will be best to contact any service technician. google.com/+GopakumarGopalan

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Rule out any loose contacts in power outlet, RC Jack, cables and connectors. The problem described by you calls for opening the back cover and further investigation, which should only be done by a qualified service technician.

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check the menu for power saving option if it`s on shut it off.

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1 Answer

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1 Answer

Tv shuts off immediately after turning on


Does it shut off shut off, or is there audio present after the lamps shut off? When you shine a light to the screen do you still see picture kind of?

If still see picture, it's inverter/power supply or CCFL bulbs itself. If no picture, completely off, it's DEFINITELY the inverter/power supply.

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