pilot42''-no backlight

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  • willyam1
    Senior Member
    • Feb 2012
    • 112
    • israel
    #1

    pilot42''-no backlight

    HI.
    NO BACCKLIGHT.
    24VOK BL ON OK 3.5V PWM OK 3.6V.
    SMD FUSES 4A OSMD FUSE1.5A/76V OK.
    NOTICE THAT THERE IS NO VCC VIN PIN 8 TO THE IC CONTROLLER OZ9928SN .
    the source to the vcc is also the source to a reg7805 no in and no out.
    need schematic . MASTER AND SLAVE
    inveter is VIT70023.80 REV;5 MADE BY CMO AND THER IS 20TRANSFORMER.
    NO PULSESE TO THE TRANSISTORS THANKS WILLYAM1
    Last edited by willyam1; 11-10-2013, 11:38 AM.
    Tags: None
    • munirutech
      Senior Member
      • Oct 2013
      • 72
      • Ghana
      #2
      Re: pilot42''-no backlight

      hi
      if you can get some of the ic try to change it and see ,
      some of this ic s have (UVLO )under voltage lock out protection if is faulty no voltage will flow

        Comment

        • willyam1
          Senior Member
          • Feb 2012
          • 112
          • israel
          #3
          Re: pilot42''-no backlight

          I order it today hope to repiar it.
          I will apply the result.
          Willyam1

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