Panasonic TC-P42G15 Plasma (5 blinks) - Bad A-Board?

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  • capkid
    Badcaps Legend
    • Oct 2010
    • 1339
    • United States
    #1

    Panasonic TC-P42G15 Plasma (5 blinks) - Bad A-Board?

    I'm working on a Panasonic TC-P42G15 plasma, and I get 5 blinks when I turn it on. Also, I hear a squealing sound on the power supply that appears to be coming from one of the transformers.

    The troubleshooting steps I ran across mention checking the voltage on pin 5 of the P25 connector as the TV is powered on; the A-board should be replaced if 5V is present. The voltage appears to climb then drop as the relay clicks off; I actually got "OL" as my max voltage, which I thought was strange. Does it sound like the A-board has failed, or is there a P-board problem?

    Attached Files
    Last edited by capkid; 05-24-2013, 02:59 AM.
    LG Plasma Mal-Discharge Correction Service
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    • capkid
      Badcaps Legend
      • Oct 2010
      • 1339
      • United States
      #2
      Re: Panasonic TC-P42G15 Plasma (5 blinks) - Bad A-Board?

      Ok, I had the range on my Fluke set for 4V I'm now seeing 4.8V as the max voltage on pin 5 of the P25 connector when I turn on the TV. So, based on the troubleshooting handbook, it looks like the A-board is bad. Crap. Those are not easy to find at a reasonable price. I also remembered that the person who sold me the TV mentioned plugging in his PS3 to the main board and the TV shut down a bit later.
      Last edited by capkid; 05-24-2013, 09:52 PM.
      LG Plasma Mal-Discharge Correction Service

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