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Panasonic tc-65cx420u No Power

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    #21
    Re: Panasonic tc-65cx420u No Power

    Inspect the screen closely with a bright flashlight, might be cracked, although I've seen many with broken screens that still lit up bright. Could be a connection somewhere just became loose on reassembly , no light on front could also mean a powerboard problem, maybe check all the solder joints.

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      #22
      Re: Panasonic tc-65cx420u No Power

      After rechecking some voltages on the main board connector J9 Inverter I am not getting outputs that need to be there.

      Labeled Actual
      GND 0.00
      GND 0.00
      ADJ 0.040
      BL-ON/OFF 0.131
      12V 0.001
      12V 0.001

      So any advice on where and what to start checking next?
      Bad eeprom maybe? I'm going to try to find a schematic for the board unless anyone may know where I could find it.

      Thank you for any and all help.

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        #23
        Re: Panasonic tc-65cx420u No Power

        So what is the condition, still the same display as in picture in post #10?

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          #24
          Re: Panasonic tc-65cx420u No Power

          Well I decided to go ahead and try and cook her up in the oven.......

          Destroyed 3 caps but I am now getting backlights..just going to put some new caps on and hope for the best. Not much else can do as it's about immpossible to find a main for it without spending around $100

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            #25
            Re: Panasonic tc-65cx420u No Power

            I could be wrong but that display in post#10 seemed more like a bad tab bond connection than a mainboard issue, did you check the video in post #13?

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