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Samsung PN51F5300AF does not turn on

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    #1

    Samsung PN51F5300AF does not turn on

    We had a lightning strike very near the house and my 51" Samsung turned off. No other devices even blinked. Lights never flickered and cable modem stayed on.
    No Standby light, nothing. This was the only device in the house affected.
    Fuse tested good.
    I replaced the Power Supply board thinking that was it, but no change. No standby light, nothing.
    Then I replaced Main board. Now the standby light comes on, it goes off when TV is turned on but nothing else happens.
    The green LED on main will blink a few times then it goes off.
    Turned the TV off with switch and the standby light does not come back on.
    I have to unplug from power. When plugged back in the standby light comes on again.
    Replaced X-Y Board, and Buffer (see photos) No change.
    So every board except the X and Y Sustain boards have been replaced.
    Standby light until turned on, green LED blinks and then off, no sound nothing. Standby will not come on until unplugged and plugged back in.
    Zero volts on VS and VA test points.
    So I figure one of the replacement boards I got is no good (guaranteed used) But which one??
    Attached Files
    Wonder what this thingy on the circuit board does??
    Tags: None
    #2
    Can anyone help ??

    About to just send all the boards back for a refund (less restocking) and send it to recycling, but would rather fix the TV.

    Anyone??
    Wonder what this thingy on the circuit board does??

    Comment

      #3
      Re: Samsung PN51F5300AF does not turn on

      Well....No responses here so I contacted the folks I got the boards from.

      Consensus was they had sent me a bad main board.

      They dropped another one in the mail to me, 2 day shipping, at no charge.

      I'll put all the other original boards back in and start with the new (guaranteed used) main.
      Hopefully I can send all the others back for a partial refund.

      I just want to fix my plasma screen TV, since you can't buy them anymore.
      Wonder what this thingy on the circuit board does??

      Comment

        #4
        Re: Samsung PN51F5300AF does not turn on

        OK... The main board was the problem all along, and the first replacement I got was also bad, leading to much consternation.

        Installed a good main and all my original other boards and life is good.

        Lesson learned, lighting strikes nearby will take out the main, and that's the first place to look.

        Interestingly, once the TV was fixed I found the HDMI output from the cable box was also affected by the lightning strike. The composite video output worked, but had to get a replacement cable box to go back to HDMI cable connection.

        OK. well, no help from here, but I sorted it anyway.
        Cheers
        Wonder what this thingy on the circuit board does??

        Comment

          #5
          Re: Samsung PN51F5300AF does not turn on

          Good job. Luckily you were able to find replacements for all the boards and even get a working Main Bd from the Seller. Good JOB.

          Comment

            #6
            Re: Samsung PN51F5300AF does not turn on

            tvpartstoday.com took care of me.
            Guarantee on the bad board and let me return all the others at no charge !!
            They gave me really great service, so I will recommend them to anyone looking for tv parts.
            Wonder what this thingy on the circuit board does??

            Comment

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