Toshiba 32AV502R LED TV has green light no sound or picture

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  • 1redpath1
    New Member
    • Aug 2013
    • 4
    • USA
    #1

    Toshiba 32AV502R LED TV has green light no sound or picture

    This television has a green power light when you press the power button and you can hold the power button to get it to turn off the light. The voltage on CN8 Pins 10, 11, and 12 are all 5 volts. Like they should be. When you press the power button pin 13 is showing 3.61 Volts instead of 2.4 V, so this reading shows too much voltage going to it. And pin 8 which should have 12 V when you press the power has 11.85 Volts. When power is off pin 14 should have a level less than .07 V and it does it has .06 V.

    So I wonder if pin 13 having 3.61 V instead of 2.4 is a problem with the power supply board or the main board Or other. I also wonder if 11.85 V on pin 8 is sufficient when it says it should be 12 V.

    Should I test the voltage on pin 13 after I disconnect the other boards from the power supply board? There are quite a few pictures of this model television and the boards involved already on this forum I will attempt to upload a troubleshooting flowsheet that I have been using.

    Please anyone what do you think the next step should be to determine which board or component needs to be replaced thank you. No picture and no audio.
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    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Toshiba 32AV502R LED TV has green light no sound or picture

      3.6V is probably acceptable for a 2.4V on-off signal -- in general that signal is not particularly susceptible to high input 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.

        Comment

        • 1redpath1
          New Member
          • Aug 2013
          • 4
          • USA
          #3
          Re: Toshiba 32AV502R LED TV has green light no sound or picture

          Would it be good for the next step to be to unplug the other boards from the power supply board or do I need to start investigating one of the other boards besides the power supply based on the readings that I've gotten so far

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Toshiba 32AV502R LED TV has green light no sound or picture

              According to the flowchart, I'd look into the main board myself.
              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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