Question about Samsung SyncMaster 2220WM 22" LCD Monitor

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I have a burned power supply. Component # C523 on pcb# E59670 for a Samsung 22in. Monitor M/N 2220WM. What is the replacement part and is there something else that would have caused this to char that may be bad as well?

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  • Bud Martin
    Bud Martin Nov 14, 2010

    Is it a blue cap by the lamp connector? There should be 4 of them.http://www.fixya.com/support/r6150077-ba...http://www.fixya.com/support/r5093881-lc...
    Failed TV, Monitors, Caps :http://s807.photobucket.com/home/budm/al...
    Learn about bad caps:http://en.wikipedia.org/wiki/Capacitor_p...
    Capacitor kits: http://lcdalternatives.auctivacommerce.c... he can make you a set of caps for you.

  • lwillis694 Nov 14, 2010

    As best as I can tell, yes. It is one of those. It certainly is no longer blue. I would love to have the replacement part number so I can replace it and see if this is a fix. As I asked before; could this have been caused by failure of another component? Just want to cover all of the bases.

  • lwillis694 Nov 14, 2010

    I have posted some pictures of the burned board on Photobucket. http://photobucket.com/lwwillisPhotos See if this helps to explain which components I'm looking for.

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Http://s1027.photobucket.com/albums/y331/lwwillis/
I do not see any pictures. Those caps do go bad because they are exposed to about 2000v, so they do fail. If you look at the other three, you should see somthing like 22J 3K = 22pF 5% 3000V. You can get replacement from MOUSER. Most value are from 22~47pF.

Posted on Nov 14, 2010

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  • Bud Martin
    Bud Martin Nov 14, 2010

    Here is the example of cap (22PF 3000V) made by TDK at MOUSER:

    http://www.mouser.com/ProductDetail/TDK/...

  • lwillis694 Nov 14, 2010

    I sure appreciate your help. I've been scrolling thru the Mouser catalog and guess I still don't really know what I'm looking for. Your are more than helpful.

  • Bud Martin
    Bud Martin Nov 14, 2010

    By the way, take the resistance reading of the lamp wires (do not insert them into the sockets) (PINK, WHITE, BLACK, BLUE these are the usual colors for the lamp's wires) between each wire and and the chassis, they should be all open circuits.

  • Bud Martin
    Bud Martin Nov 14, 2010

    Just type in 22pf 3000v or other value in the MOUSER SEARCH BOX

  • lwillis694 Nov 14, 2010

    Looks like the marking is: C
    3D
    3KV
    JNC

  • lwillis694 Nov 14, 2010

    I sure appreciate your help. I've been scrolling thru the Mouser catalog and guess I still don't really know what I'm looking for. Your are more than helpful.

    Looks like the marking is: C 3D 3KV JNC

    Found on another site: BADCAPS.net for apparent same board, same problem: Quote:

    "I took a closer look at the main PCB, I found a burnt out ceremic capacitor. I also found what looks like an identical capcitor on the other side of the PCB, the numbers on it is 12J 3KV JNC. I found out that this means it's a 12pF 3000v capacitor. "

  • Bud Martin
    Bud Martin Nov 14, 2010

    Look real close at the board to make sure it did not black (turn into carbon whick will conduct with 2000v applied), make sure to remove any carbon traces on the board.

  • lwillis694 Nov 15, 2010

    Thanks Bud. One of them is pretty charred. I will clean it as best as possible. Again, you've been a great help and resource. This is not what I do for a career. I've always tinkered with things and have been able to fix some of them. Since the advent of the internet and helpful people like you, we can make some of our investments work for us a little longer without having to throw them away. Thanks again. I'll try to let you know the outcome of this little project.

    Larry

  • Bud Martin
    Bud Martin Nov 15, 2010

    Yes, scrape it off real well, even if it ends up with a hole (I use EXACTO knife) on the board, the current will try to flow through the least resistance.

  • lwillis694 Nov 15, 2010

    "Tracking" Can sure mess up a switchgear too. We had a bad burn lately too. Old stuff!

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