Question about NEC PlasmaSync 61MP1 61 in. Television

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NEC plasmaSync 61mp1 problems

I have a NEC plasmasyen 61mp1 that was given to me because the company was replacing it. It would do nothing when powered on. I opened the back and found one of the 15amp fused blown. I replaced the fuse and powered it up. The green light came on and the fans powered up. Then the fans stopped and the green light blinked 3 times and the red 1 time it continued this sequence. The screen stayed dark. I do not have the remote to the monitor. I tried the input button but nothing happened to the picture. The unlock is activated on the back. So I unplugged it and am asking for some thing to try. Please help. Coopersdad

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  • coopersdad Aug 31, 2007

    When I powered it up there was an arc. I couldn't find it at first. But one of the little (about 2x2) double stacked boards is fried. It plugs into the large board, I am assuming it is the mother board. The burned board looks to be glued to the back of the flat panel. I am sorry I don't have the board #s with me. I will add the image of the board this evening.

    Coopers dad

  • coopersdad Sep 01, 2007

    photo of the power supply

  • coopersdad Sep 01, 2007

    board photo different angle



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Here is the link for the user manual if you need it; Check page 54 of the manual (61 of the pdf) right at the bottom. The lights you have indicate that either the power supply citcuit, the screen, or one or more fans have been damaged. If you are sure all the fans work, then the power supply is the only repairable posssibility. replacing the screen is not worth it. The fact that the fuse blew but doesn't blow again makes me suspect one of the transformers or capacitors in the power supply has blown, causing the short that blew the fuse, but also then melted the short so it no longer blows the fuse. If you have a multimeter, and ideally an ESR meter, with a good photo of the power supply unit we can hopefully talk you through what to check - otherwise get a repair shop to look at the power supply. Hope this helps :)

Posted on Aug 31, 2007

  • Anonymous Sep 01, 2007

    It doesn't look like there is anything on that board that can be usefully checked or replaced with normal tools. Best bet is probably to replace that board - do you have a manufacturers name and number for it - if so I can try and track you down a replacement to see if it is worth it - should be.




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