Phillips 32PFL3504D/F7 LCD

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  • Mad_Professor
    A Mech Warrior
    • Feb 2011
    • 1587

    #21
    Re: Phillips 32PFL3504D/F7 LCD

    Originally posted by tom66
    100V? That's quite high... what is the voltage across them?
    Measured both they go to 80v DC immediately before the set goes dead.

    EDIT: I was fooling around with the diode setting on my crappy centech DMM because I was bored and decided to test all the diodes. Came across the diode circled in red as shorted, I remove it and test it again, it read .79; Then I tested the resistors above circled in green with the 200 ohm setting and they too were shorted and when I removed them, they both read 0.04-8????

    If I look up the band code they come out 0.39 ohm with 5% tolerance. Am I reading this correctly?
    Attached Files
    Last edited by Mad_Professor; 03-16-2012, 10:33 AM. Reason: New info...

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    • Mad_Professor
      A Mech Warrior
      • Feb 2011
      • 1587

      #22
      Re: Phillips 32PFL3504D/F7 LCD

      Originally posted by Mad_Professor
      EDIT: I was fooling around with the diode setting on my crappy centech DMM because I was bored and decided to test all the diodes. Came across the diode circled in red as shorted, I remove it and test it again, it read .79; Then I tested the resistors above circled in green with the 200 ohm setting and they too were shorted and when I removed them, they both read 0.04-8????

      If I look up the band code they come out 0.39 ohm with 5% tolerance. Am I reading this correctly?
      NEVER mind I'm an idiot! I misread my decimal on the meter.

      Ok so back to the panny 100v caps with 80v across them.

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      • Mad_Professor
        A Mech Warrior
        • Feb 2011
        • 1587

        #23
        Re: Phillips 32PFL3504D/F7 LCD

        bump

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        • Mad_Professor
          A Mech Warrior
          • Feb 2011
          • 1587

          #24
          Re: Phillips 32PFL3504D/F7 LCD

          I'm gonna toss it, since I don't know how to fix or troubleshoot this shit.

          Comment

          • Mad_Professor
            A Mech Warrior
            • Feb 2011
            • 1587

            #25
            Re: Phillips 32PFL3504D/F7 LCD

            What would cause the inverter protection to trip?

            I went ahead and remove protect3 jumper to see if the T.V stays on with the inverter and ccfl, It does. But the transformers don't get hot, gets up to 110F each. I've checked each ccfl individually, every single one lights up and stays steady.

            So maybe a faulty protection circuit?
            Attached Files

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            • randtek
              Badcaps Veteran
              • Oct 2011
              • 280
              • US

              #26
              Re: Phillips 32PFL3504D/F7 LCD

              I have fixed some of these by replacing the resistors listed below with the new values listed.

              Location____Original value___ New value
              R1943. . . . . . 820K. . . . . . . 390K 1/4 W
              R1944. . . . . . 820K. . . . . . . 390K 1/4 W
              R1945. . . . . . 150K. . . . . . . 220K 1/4 W
              Last edited by randtek; 03-20-2012, 09:01 AM.

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              • Mad_Professor
                A Mech Warrior
                • Feb 2011
                • 1587

                #27
                Re: Phillips 32PFL3504D/F7 LCD

                Originally posted by randtek
                I have fixed some of these by replacing the resistors listed below with the new values listed.

                Location____Original value___ New value
                R1943. . . . . . 820K. . . . . . . 390K 1/4 W
                R1944. . . . . . 820K. . . . . . . 390K 1/4 W
                R1945. . . . . . 150K. . . . . . . 220K 1/4 W
                Why replace with lower values? Would this fix the T.V circuit protection trip?

                R1945 is 390k, please advise.

                Comment

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