Dell 24" LCD, bad inverter or light - testing?

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  • Elmojo
    Member
    • Dec 2009
    • 38

    #21
    Re: Dell 24" LCD, bad inverter or light - testing?

    Originally posted by PlainBill
    ...with the delay I've lost the details of this thread. Skimming it, I often asked myself 'Why did I ask that?' Now I'm wondering if I was smarter then.
    Then? It's only been about a month! lol
    C'mon Bill, you aren't going senile on me, are ya?
    Seriously, though, thanks for the help. I'll be glad to recap (no pun intended) any details that may have slipped your mind since we talked last.
    I'll try to get some time this evening to test out the pins and report back.
    What voltage should I be looking for on pin 3?
    5v like pin 5 or something else?

    Thanks again,
    Mike

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    • PlainBill
      Badcaps Legend
      • Feb 2009
      • 7034
      • USA

      #22
      Re: Dell 24" LCD, bad inverter or light - testing?

      Originally posted by Elmojo
      Then? It's only been about a month! lol
      C'mon Bill, you aren't going senile on me, are ya?
      Seriously, though, thanks for the help. I'll be glad to recap (no pun intended) any details that may have slipped your mind since we talked last.
      I'll try to get some time this evening to test out the pins and report back.
      What voltage should I be looking for on pin 3?
      5v like pin 5 or something else?

      Thanks again,
      Mike
      Yes, I am. Sometimes in the middle of a sentence I forget what

      I don't have the schematic for this inverter, but one is power, the other is Enable. Both should be above 3 volts, Vcc (pin 5) should be at 5V.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

      Comment

      • Elmojo
        Member
        • Dec 2009
        • 38

        #23
        Re: Dell 24" LCD, bad inverter or light - testing?

        Hahaha good one!
        I'll check the voltages asap, probably tomorrow afternoon when I get home.
        Do I need to plug everything back into the board or just certain things?
        I assume I need to plug in the cable that connects to the front panel switches, but what about the HV cables to the lamps, do those need to be connected also?
        Thanks,
        Mike

        Comment

        • Elmojo
          Member
          • Dec 2009
          • 38

          #24
          Re: Dell 24" LCD, bad inverter or light - testing?

          Okay, finally got home long enough to test it out.
          Pin 3 reads 4.82v
          Pin 5 reads 4.89v
          Oh, and the backlight is lit.....wait, what?
          It appears that the problem was just a sketchy connection of the inverter wires to the lamps.
          Huh, go figure!
          Well, I guess it's fixed for now.
          Thanks for the help Bill.
          I'll be sure to post back if anything else pops up.
          -Mike

          Comment

          • JonathanAnon
            Badcaps Veteran
            • Jul 2012
            • 457
            • Ireland

            #25
            Re: Dell 24" LCD, bad inverter or light - testing?

            Hi guys, had the same CCFL chip and couldnt find the pin outs, this thread again was very helpful...

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