should i just replace the power supply sanyo dp58d33

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  • marlboroa
    Senior Member
    • Jul 2012
    • 59
    • USA

    #1

    should i just replace the power supply sanyo dp58d33

    So far everything i have measured on the hot side of power supply is 44 volts. the standby light does not come on and the set doesnt work.
    its a sanyo dp58d33
  • marlboroa
    Senior Member
    • Jul 2012
    • 59
    • USA

    #2
    Re: should i just replace the power supply sanyo dp58d33

    heres some pics
    Attached Files

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: should i just replace the power supply sanyo dp58d33

      Originally posted by marlboroa
      So far everything i have measured on the hot side of power supply is 44 volts. the standby light does not come on and the set doesnt work.
      its a sanyo dp58d33
      When you make Voltage measurement in the primary side of the circuit, you need to use the negative leg of the main filter cap as the primary circuit GND REF. point for your meter, not the chassis.
      So what DCV do you get when you measure between the (+) and (-) legs of those two main filter caps laying on their sides? It should be around 160~170VDC and should jump to >360VDC when the power switch is activated.
      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

      • marlboroa
        Senior Member
        • Jul 2012
        • 59
        • USA

        #4
        Re: should i just replace the power supply sanyo dp58d33

        166 on the cap. nothing changes when the power button is pushed.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #5
          Re: should i just replace the power supply sanyo dp58d33

          OK, the connectors of the power supply board has label for each pin, so report the DCV reading for each pin and WITH pin names so we can see what Voltages we are missing on which pin.
          http://www.shopjimmy.com/sanyo-1lg4b...pply-unit.htm#
          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

          • marlboroa
            Senior Member
            • Jul 2012
            • 59
            • USA

            #6
            Re: should i just replace the power supply sanyo dp58d33

            using the chassis as ground. i cant get a reading on any of the pins. they are all 00.00

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: should i just replace the power supply sanyo dp58d33

              OK. you do habe 160V to to run the standby power supply, but do have any DCV on any of the pin of the connector, it should have at least standby Voltage to run the main board. You need to get the power supply board working first.
              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

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #8
                Re: should i just replace the power supply sanyo dp58d33

                You should eliminate the possibility of a shorted main board - check that connector with the main board unplugged, too.
                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

                • marlboroa
                  Senior Member
                  • Jul 2012
                  • 59
                  • USA

                  #9
                  Re: should i just replace the power supply sanyo dp58d33

                  with main unplugged its
                  bl-adj -1.34 volts
                  ps-on -1.34 volts
                  everything else is 00.00

                  Comment

                  • ecking767
                    Badcaps Veteran
                    • Oct 2009
                    • 492
                    • USA

                    #10
                    Re: should i just replace the power supply sanyo dp58d33

                    looking at the 1st picture, I see a burn mark near the A/C input.

                    that where I will start. something burn out or you had a surge

                    Comment

                    • marlboroa
                      Senior Member
                      • Jul 2012
                      • 59
                      • USA

                      #11
                      Re: should i just replace the power supply sanyo dp58d33

                      It had a lightning hit from what i what i was told. The burn mark they did trying to check the "fuse". cause well its always just a fuse. lol

                      Comment

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