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Sanyo PDP-42PF2 Stuck on StandBy

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    #1

    Sanyo PDP-42PF2 Stuck on StandBy

    Hi,

    I have a Plasma TV Sanyo PDP-42PF2 (seems based on a samsung chassis) that is stuck on standby, it does not respond to remote control or front panel buttons, all voltages on the PSU section are down with the exception of the ones i presume are responsible for the standby circuit and connect to the control board (attached picture) this connector has the following voltages:

    Vsb - 5.23V
    Vson - 0.2mV
    AC_DET - 5,20V
    Relay - 4.10V
    D5V - 2.3mV
    DEV3 - 20.6mV

    Any help would be apreciated.
    Attached Files
    Tags: None
    #2
    Re: Sanyo PDP-42PF2 Stuck on StandBy

    When you press the power button, do you observe any change in those voltages?
    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.

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      #3
      Re: Sanyo PDP-42PF2 Stuck on StandBy

      There are no changes in the voltages when pressing the panel buttons or the remote.
      The behavior before it stopped turning on for good was that sometimes it would not turn on imediatly and it would turn it self on after a couple of minutes.

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        #4
        Re: Sanyo PDP-42PF2 Stuck on StandBy

        Can you repeat with the remote to make sure? Trying to rule out a stuck or intermittent button. Right now standby voltage is good from PSU, so it isn't going to be a bad cap at fault.
        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

          #5
          Re: Sanyo PDP-42PF2 Stuck on StandBy

          Repeated again with remote and even removed the connection to the front panel buttons so that we can rule out a bad switch, voltages remain the same, from observation all caps seem ok no bulges or similar visible problems.

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            #6
            Re: Sanyo PDP-42PF2 Stuck on StandBy

            The fault is more than likely on the main board then.

            This set is based on a Samsung plasma panel, but the main board, case, remote, etc. are made by Sanyo or a subcontractor for Sanyo.

            Can we see clear close up pictures of the main board?
            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

              #7
              Re: Sanyo PDP-42PF2 Stuck on StandBy

              Here they are, sry about the quality if you need to know some reference or part number let me know.
              Attached Files

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                #8
                Re: Sanyo PDP-42PF2 Stuck on StandBy

                hi, you managed to resolve the situation? I have an identical problem on identical unit

                Originally posted by VHSFI View Post
                Here they are, sry about the quality if you need to know some reference or part number let me know.

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