Panasonic TC-P4232C has 5v Standby but no response to pressing power button

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  • hawaiianeye
    Member
    • Nov 2014
    • 37
    • Hawaii
    #1

    Panasonic TC-P4232C has 5v Standby but no response to pressing power button

    this looks to be a really nice plasma tv made in 2011 so its not too heavy, and only has 4 boards. the power supply, the motherboard, and an inverter master slave combo. i can see the pin for 5v standby reading 5v when plugged in but pressing power button does nothing and i see no other voltage on any other pins.
    can i trick the plasma tv to turn on the power supply and backlight with a 1k resistor between 5vsb and PS_ON just like with other tvs?
    only problem is there are like 4 different pins that end in _ON and none of them say PS_ON so i cant be sure which is what.

    would really like to get this "newer" plasma tv back in shape...ive heard a lot of good things about the plasma's picture quality but i havent got one working yet because they are usually just so heavy and have way too many boards to bother with. this one seems different...
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    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia
      #2
      Re: Panasonic TC-P4232C has 5v Standby but no response to pressing power button

      for starters you're mixing plasma TV terms with LCD technology. there's no inverter/backlight/slave/master combos.

      you have the P board(PSU), SN board which is a Sc,SD,SU combo, a SS board, and A board(mainboard).

      I'm going to assume these may suffer similar failures as the FHD models with the Sc/SN boards shorting. that can cause the TV not to turn on.

      If you have a multimeter and know how to check for short circuits I would disconnect the power cable at the SN2 connector on the SN board and check across the 2 pins to see if shorted. I'd also disconnect the SS11 connector and check across pins 1-3 and see what you find.

        Comment

        • Alastair E
          Chief Womble
          • Mar 2013
          • 1963
          • U.K.
          #3
          Re: Panasonic TC-P4232C has 5v Standby but no response to pressing power button

          FHD Pan. sets are (Of This age) Just as CRAP as the HD ones!

          It'll be the SC/SN board that has many shorted/faulty devices, unfortunately, some rather tiny (Difficult to identify and change) parts too.

          --IF you dont get 'em all first time--Then all your work and new parts goes Bang at turn on, sometimes leaving you with many More dead bits to change!

          Whats the blink-code telling you?

          IF you have little/no experience with Plasma (As it appears from your O/P,) then best bet is to find which board/s are faulty and replace em complete. IF the SN/SC is dead, then chances are the SS board is too. Changing only one will kill the new one.....

          PLASMA Technology is TOTALLY Different to any LCD/LED type, and takes quite some time to get your head around......
          TELEFIX

          How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
          http://www.irf.com/technical-info/appnotes/an-1088.pdf
          PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

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