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Rca l42wd22

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    Rca l42wd22

    I found a RCA L42WD22YX6 tv that is not powering on. When I plug the tv in I get a green light on the front but nothing else happens. I found some bad capacitors on the secondary side of the power supply and replaced all of the capacitors on the secondary side, even the ones that looked ok. However, now I have the power supply when plugged in to the tv continues to click. It almost sounds like it trys to start three times (3 clicks) and then shuts down (4th click). Then is immediately starts with the 3 clicks again and shuts down with the 4th click. I have tried unplugging the master and slave inverters while I tried to power on tv, still get the same clicking sounds. Would I need to replace the capacitors on the primary side of the power supply as well...at least that is where I am leaning towards but wanted to see what you all thought.

    Thanks

    #2
    Re: Rca l42wd22

    Found out that one of the screws on the heat sink for the diodes was grounding the power supply out...once I fixed this the tv powered right up.

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      #3
      Re: Rca l42wd22

      You may wnat to check the capacitors on the inverter boards if you already have'nt, they usually go bad also.

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        #4
        Re: Rca l42wd22

        "Found out that one of the screws on the heat sink for the diodes was grounding the power supply out...once I fixed this the tv powered right up." So was it missing the insulator sheet for the Diode or someone use the wrong Diode, the old diode that should have Isolated tab?
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

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