A17P1MPW LC401EM3F Emerson PS Issue

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  • dcapper
    Badcaps Veteran
    • Dec 2013
    • 496
    • Canada
    #1

    A17P1MPW LC401EM3F Emerson PS Issue

    Been reading the other posts and downloaded the schematics for this power supply. I studied the repair kits for this power supply. The thing I don't get is I metered all the caps, diodes, fets, and transistors. They all read perfect. Any that didn't read properly I removed and metered again. Proved them to be ok. Now there is some ic's on the repair kit I obviously can't meter. Is it possible that one of these chips has blown but nothing else? I find that odd. The fuse has never blown on the board.
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    • dcapper
      Badcaps Veteran
      • Dec 2013
      • 496
      • Canada
      #2
      Re: A17P1MPW LC401EM3F Emerson PS Issue

      Got an update for anyone that has issues with this power supply. There is five 4 pin ic's 2561a is on them. I bought them from Digikey. I got the tv to power up now but I have no picture, just audio. I was metering the inverter board and I am not getting voltages on the fets. I checked the fuse and it's good. Is it common for an inverter to die? I haven't had one on any of my repairs in the past go faulty.

        Comment

        • selldoor
          Slow Learner
          • Dec 2010
          • 7870
          #3
          Re: A17P1MPW LC401EM3F Emerson PS Issue

          Hi - do you have back light -or nothing at all on panel?
          Looks to be voltages supplied from top left and top right connectors to the inverter board. Are those voltages ok?
          Please can you post a picture of the inverter board?
          Please upload pictures using attachment function when ask for help on the repair
          http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

            • dcapper
              Badcaps Veteran
              • Dec 2013
              • 496
              • Canada
              #4
              Re: A17P1MPW LC401EM3F Emerson PS Issue

              No backlight at all. Black screen with audio. The connectors leaving the power supply are supplying the proper voltages. Once it gets into the inverter board, I lose my voltages at the gates. Voltage goes in and doesn't come out. No short when metering the gates though.
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