This does not look like factory work

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  • ljintexas
    LJinTexas
    • Jan 2015
    • 669
    • USA

    #1

    This does not look like factory work

    This is the master inverter board on a phillips 42PFL7422D circa 2007.
    Capacitors have been replaced and looks like someone did some rerouting maybe due to bad traces on the board? At any rate, it's getting updated inverter boards. My guess would be that these are the original inverters from the dates on them.
    Attached Files
    Last edited by ljintexas; 02-07-2015, 12:19 PM.
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: This does not look like factory work

    There are modifications that you suppose to do to these board to stop them from blowing up.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • ricosavy
      Badcaps Veteran
      • Jul 2012
      • 457
      • united states

      #3
      Re: This does not look like factory work

      I dont think that is one of them most of the ones you buy on ebay dont have the mods done to them.probably burnt traces.

      Comment

      • ricosavy
        Badcaps Veteran
        • Jul 2012
        • 457
        • united states

        #4
        Re: This does not look like factory work

        Here is one i fixed the trace was burnt where it sits but the trace runs under the chip so when i put the new chip i bent the leg under and soldered it and tested it worked good.
        Attached Files

        Comment

        • ricosavy
          Badcaps Veteran
          • Jul 2012
          • 457
          • united states

          #5
          Re: This does not look like factory work

          Another pic
          Attached Files

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: This does not look like factory work

            LG/Philips Inverter Modification (for reliability):
            http://www.toms-service-manuals.com/...h=Submit+Query
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

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