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Emily Veenhuizen Posted on Nov 26, 2015
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How do I identify a bad capacitor on a Samsung LN55C610N1F power supply board?

A capacitor on the power supply board of my television completely burnt out and so I cannot read the value of the capacitor to replace it. It is labelled CP820 on the power supply board. I know exactly which capacitor is the problem (a high voltage ceramic capacitor with the blue tops) but the blue plastic has melted so I can't read the value of the capacitor itself

1 Answer

jimmy jinx

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  • Posted on Nov 26, 2015
jimmy jinx
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Joined: Apr 20, 2015
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You can tell by the top of them,when there bad they bulge ( as if there going to pop )


How do I identify a bad capacitor on a Samsung LN5 - 25980851-y0it05ineeq3t1lxjrw0uiu3-1-0.jpg

  • 8 more comments 
  • Emily Veenhuizen
    Emily Veenhuizen Nov 26, 2015

    It's not one of the those, it is a high voltage ceramic capacitor (one of the ones with the blue plastic tops). It completely burnt out (it was smoking) and so the blue plastic has melted off and I can't identify the value of it to buy a replacement

  • Emily Veenhuizen
    Emily Veenhuizen Nov 26, 2015

    It's not one of those. It's a high voltage ceramic capacitor that's the culprit (the ones with the blue plastic top). It completely fried (was literally smoking) and so the blue plastic top is melted so I can't tell the value of the capacitor to replace it and hopefully fix the problem without having to buy a new board

  • jimmy jinx
    jimmy jinx Nov 26, 2015

    sorry my mistake,i found an old listing on ebay with a photo of the board,im able to zoom in by hovering the mouse,mabe this will help ?
    http://www.ebay.com/itm/Samsung-LN55C610...

  • jimmy jinx
    jimmy jinx Nov 26, 2015

    ps: scroll down when link is opened

  • Emily Veenhuizen
    Emily Veenhuizen Nov 26, 2015

    Close! The writing on the capacitor is on it's side, so I can't see it from a photo taken from above. I'm hoping someone has one that would take a look for me

  • jimmy jinx
    jimmy jinx Nov 26, 2015

    ahh ok,sorry about that

  • Emily Veenhuizen
    Emily Veenhuizen Nov 26, 2015

    Here's a pic of the one I need

  • jimmy jinx
    jimmy jinx Nov 26, 2015

    i see your problem now,the only thing i can suggest is to keep an eye on ebay for some one selling the same board and ask them if they could give you the number from it.sorry i cant be more helpfull

  • Emily Veenhuizen
    Emily Veenhuizen Nov 26, 2015

    No worries, thanks for trying! I've sent out a couple of messages to those selling the board. Fingers crossed one of them is willing to help!

  • jimmy jinx
    jimmy jinx Nov 26, 2015

    good luck

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Samsung 32 series 3 lcd...have no picture and sound but have power.model la32b350fixzn

Good day!!!!


You have a better chances if you have failing bad capacitors on the power supply board...


bad capacitors sometimes bulged on top,sometimes not...if the caps is bulged you can easily identify it..



Thanks for using fixya...
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The problem is that there is a burnt or bad capacitor on the power supply board of the television, it is not longer responding, while it tries to respond is when you get the clicking sound, therefore it is not going to power on until the bad capacitor is replaced.

Run a check on the power supply board, you will definitely see the bad capacitor, have it replaced and the television will turn on after reassembling the television back together.

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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.


Hope this will help to rectify the fault and you have to be careful, because the power board contains high voltages.
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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Samsung+LN-R409D+
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Could be power board. Check for swollen capacitors . If ok next check buffer boards for burnt ic. With set unplugged unplug power board from sustain boards. Plug back in and see if it turns on. Unplug again and disconnect buffer boards from sus board plug power supply back into sus to see if it powers on. If it does then buffer boards bad. Isolate upper and lower to Determine which one is bad. Just always remember to disconnect power board from sus boards when disconnecting panel to buffers. Power supply stores a lot of energy and will burn these connectors while reconnecting them.
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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
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http://en.wikipedia.org/wiki/Capacitor_plague
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