Toshiba 40L1333DEV Vestel 17IPS20

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  • psdavid65
    Member
    • Dec 2021
    • 24
    • Ghana
    #1

    Toshiba 40L1333DEV Vestel 17IPS20

    Quick Question Please.
    Is low resistance on gate pin 5 of U202 normal? I have a very very low resistance of 5 ohm on this gate. In diode mode, it looks shorted and beeps. Is this a normal behavior of this FAN6300 IC?
    All other components on this vestel board have valid readings except for this U202 IC.
    Tags: None
    • lotas
      Badcaps Legend
      • Jan 2016
      • 4548
      • Russia
      #2
      Re: Toshiba 40L1333DEV Vestel 17IPS20

      If the mosfet is broken, then there will be low resistance at 5pin relative to ground.
      Attached Files

        Comment

        • psdavid65
          Member
          • Dec 2021
          • 24
          • Ghana
          #3
          Re: Toshiba 40L1333DEV Vestel 17IPS20

          Thank you for your reply.
          The diode and mosfet connected to pin 5 of U202 is functioning normally.
          I do realize that when I lift the leg pin 5 of this U202 IC from the board, the short disappears. When I check the lifted pin(Not connected to board at this time), the short is on the IC itself. I however do not have a replacement IC

            Comment

            • lotas
              Badcaps Legend
              • Jan 2016
              • 4548
              • Russia
              #4
              Re: Toshiba 40L1333DEV Vestel 17IPS20

              This means the PWM is not working properly, only replacement.

                Comment

                • psdavid65
                  Member
                  • Dec 2021
                  • 24
                  • Ghana
                  #5
                  Re: Toshiba 40L1333DEV Vestel 17IPS20

                  Thank you Iotas. I'm grateful for your assistance

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