Polaroid Plasma Troubleshooting

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  • notrubskwah
    New Member
    • Jan 2016
    • 3
    • usa
    #1

    Polaroid Plasma Troubleshooting

    Hi everyone, been piddling on LCD TVs for a while and decided to dive into a plasma. Picked it up for $45 polaroid pla 4248 don't know any history on it. When powered on it turns on and the screen flips out red and some green if you are changing channels if it left alone on one channel it is a white screen with a few lines going horizontal. I would assume a buffer board is a causig the lines but I do believe there is more involved. All of the boards have cool heatsinks except the one on the y sustain board it gets warm while the others are cool. I wonder if it is something wrong with the y sustain and it took out the y drive(buffer). Any thoughts, thanks in advance.

    this is not my video or brand but this is exactly what mine is doing. And I say that but everything in the tv is branded LG.
    https://www.youtube.com/watch?v=OIDqrQGmngU
    Tags: None
    • notrubskwah
      New Member
      • Jan 2016
      • 3
      • usa
      #2
      Re: Polaroid Plasma Troubleshooting

      Also already took out all the boards and soldered a bunch legs and transistors, capacitor legs, etc to see if it was a bad connection but its not it didnt make a difference. all the capacitors look good, dont see any burnt marks or chips anywhere tv is not throwing any codes and it doesnt shut down on its own and will respond to the buttons but i cant see the menu or anything.

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