Toshiba 55SV670U No standby light with 5 standby volts

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #41
    Re: Toshiba 55SV670U No standby light with 5 standby volts

    Originally posted by jhbox
    Pardon me. 12 on SR81, 5 for SR80
    OK since that relay runs on 12V that means the 12V power supply has to be working, that 12V/18 power supply 9as explain earlier) is on when relay SR 80 is turned on, so do you have the 12V and 18V at the connectors?
    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

    • jhbox
      Member
      • Jul 2017
      • 35
      • United States

      #42
      Re: Toshiba 55SV670U No standby light with 5 standby volts

      Which connectors are you talking about? Also, 80 has 5v across the coil, and is closing, and SR81 is 12v and is not closing. I think you have it backwards.

      Comment

      • jhbox
        Member
        • Jul 2017
        • 35
        • United States

        #43
        Re: Toshiba 55SV670U No standby light with 5 standby volts

        Also, found a manual for this actual model
        Attached Files

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #44
          Re: Toshiba 55SV670U No standby light with 5 standby volts

          Originally posted by jhbox
          Which connectors are you talking about? Also, 80 has 5v across the coil, and is closing, and SR81 is 12v and is not closing. I think you have it backwards.
          Look at your post #4. Relay SR81 needs the 12V for the coil to operate.
          When SR80 is on it provides the 120VAC to the bridge rectifier to give the DC Voltage to run the 18V/12V switching power supply section.
          Last edited by budm; 08-07-2017, 07:20 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

          • jhbox
            Member
            • Jul 2017
            • 35
            • United States

            #45
            Re: Toshiba 55SV670U No standby light with 5 standby volts

            Ah, I got you, pardon me.

            I observed an odd behavior just now. On POW_SIG, I am getting a quick reading when I unplug the tv from ac power at the wall. What would cause that?

            Comment

            • jhbox
              Member
              • Jul 2017
              • 35
              • United States

              #46
              Re: Toshiba 55SV670U No standby light with 5 standby volts

              Any ideas? budm? R_J? Anyone?

              Comment

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