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Sharp LC-37GA9E tries to start but no go

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    #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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    #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?

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      #3
      Re: Sharp LC-37GA9E tries to start but no go

      Anyone?

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        #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!

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