PROSCAN PLDED3280A-D 1607 no standby/power

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  • RRice25541
    Member
    • Nov 2015
    • 47
    • USA
    #1

    PROSCAN PLDED3280A-D 1607 no standby/power

    The tv is completely dead, no standby led nothing,, measured voltage across main caps and found voltage fluctuating around the 160Vdc range..
    located 2 bad parts in the LED drive circuit,, Driver IC AYN6HB and an FET.. i can find a replacement for the FET fine, but not having any luck locating the driver IC.

    I removed both parts and used my led tester to supply voltage to the backlights but the tv will still not turn on..
    voltage on all of the regulators is 0V

    Does anyone know what a replacement driver IC would be for AYN6HB and also can give me some idea where to look for the power on issue,, can't find a schematic for this unit anywhere
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: PROSCAN PLDED3280A-D 1607 no standby/power

      You will get more help if we can see the pictures of the board and the IC in question.
      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

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9535
          • Canada
          #3
          Re: PROSCAN PLDED3280A-D 1607 no standby/power

          The best I can come up with is that the Number is AYNxxx where xxx seems to be a date code and is different between ic's
          A common problem on this board is the eeprom, Are you sure the fet and ic are defective?
          Attached Files
          Last edited by R_J; 11-15-2019, 10:13 PM.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: PROSCAN PLDED3280A-D 1607 no standby/power

              So are you getting the Standby Voltage at all?
              Last edited by budm; 11-15-2019, 10:49 PM.
              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

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