Question about Samsung PPM42S3 42 in. Plasma Television

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Samsung Plasma PPM42S3 Dead

The set has no picture or sound. Fans will run after power button is pushed, stop, then run again and stay running and power LED will extinguish. Any ideas?


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  • Anonymous Dec 14, 2008

    samsung ppm42s3 plasma tv......

    It works for about hour after that picture starts wobling,snowy & cant watch.Again after cooling works for a another 30-60 minutes.Can anyone help me out here.



  • arunaik_6 Dec 14, 2008

    samsung plasma tv PPM42S3Q,It only works for an hour after that pictures starts to WOBBLING,SNOWY,SOMETIMES SCREEN GOES BLANK.Nothing wrong with the input signal as i tried with dvd when problem starts.After 30min cooling it works fine again another 30-60 MINUTES.
    This tv is only 26months old.Pls let me know what might be the issue.



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Hello karnevil925,

I would suspect a problem with the power supply board (the switching power supply) or the power connection to the ignition board. You will need a schematic and a multimeter to test the power levels on the board.
I would suggest that you take this TV to a qualified TV technician for repair, since there is a possible shock hazard involved.

I hope this helps,

Thank you,


Posted on Sep 27, 2008


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Hello arunaik_6,

This looks as if a component has become thermally sensitive. The best way to find this is to use component cooling spray. It looks as if the problem is localized to the tuner section. Take the back off of the TV and turn the TV on, wait until the problem occurs and lightly spray the tuner section with the component cooling spray watch for any reaction, then if this does not work spray the Microprocessor and the LVDS section and watch for a reaction. The set should go back to normal when it does that section is the problem, try to localize the problem to one component. Then replace that component.

I hope this helps,

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