Sharp LC-37GA9E tries to start but no go

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  • PowerAmpFreak
    Badcaps Veteran
    • Feb 2010
    • 982
    • Sweden
    #1

    Sharp LC-37GA9E tries to start but no go

    Hi all.
    The set tries to start up, all voltages from PSU seems to come up fine, +24V to inverter, but after a few seconds it shuts down.
    I would guess this is due to a faulty inverter.
    I've included one overall picture and one close up of backside of inverter boards.
    Initial measurements of inverter transformers both primary and secondary sides didn't reveal anything suspect.
    There are three fuses on the two inverter boards and they are fine aswell.
    Any advice is welcome. Thanks!
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    • PowerAmpFreak
      Badcaps Veteran
      • Feb 2010
      • 982
      • Sweden
      #2
      Re: Sharp LC-37GA9E tries to start but no go

      Tom66, I found a service bulletin for those inverters at your splendid webpage, which pointed out the inverter mounting screws as the main problem. Could this be the problem in this set, aswell?

        Comment

        • PowerAmpFreak
          Badcaps Veteran
          • Feb 2010
          • 982
          • Sweden
          #3
          Re: Sharp LC-37GA9E tries to start but no go

          Anyone?

            Comment

            • PowerAmpFreak
              Badcaps Veteran
              • Feb 2010
              • 982
              • Sweden
              #4
              Re: Sharp LC-37GA9E tries to start but no go

              Found it. The powerswitch was bad. It appeared to me the switch was just a tact switch, but the fault was that it didn't stay pressed (toggle switch).
              So a new switch will fix this!

                Comment

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