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L1933TR-SF LG monitor is dead. Power on blue light when plugged in comes on for a split second and then disappears. Any suggestions? Thanks Larry

Posted by laustin132 on

  • laustin132 Jun 17, 2009

    To: Buddymc

    Thanks for the response re; my monitor issue. I do understand

    what you are saying re; the blown capacitors and replacing them in the power supply ckt.

    If you want to offer advice on what would be required to take the monitor apart and replace the components I would appreciate that. My background is in the electrical field and I do have some level of expertise but not in computer hardware of course.

    What is your shipping address and would you have a ball park cost for the repairs should I decide to send it to you. I am located in the Chicago area. Thanks again for your help and have a good day.

    Larry Austin.


2 Answers

Buddy Mcsparrin

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You have a power supply issue in the monitor, most likely a 1 or more blown capacitors. If you are comfortable with electronics and soldering I should be able to talk you thru repairing your unit. If you don't want to attempt the repair we have a repair service and can do it for you.

Posted on Jun 17, 2009

  • Buddy Mcsparrin Jun 17, 2009

    Hello Larry,

    OK, If yuo take off the back plastics of the monitor and then a metal cover you will see the power supply PC board. Look for capacitors with bulging tops, they may be blown open or just slightly domed. You should find several of them ( they usually go out in groups of 2-3). On the side of each cap. you will find the value printed on the plastic cover. You may be able to get the ones you need at Radio Shack where you live if not you can order them from several internet sites, or I can ship them if you let me know the values you need. Just unsolder the blown caps and install the replacement ones. Reassemble the monitor and it should be back going. If you want us to do the repair call me at 318-447-9040 and I can give you details.

  • MGX Kegwad
    MGX Kegwad Jan 24, 2011

    This is the solution for my problem, i found 3 that the tops stated to bulge... i replaced them and BINGO! It lives again :)

    Thanks for the guidence




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Do the Capacitor values have to be exact or can they be close?

Posted on Feb 22, 2010

  • Anonymous Feb 22, 2010

    I should give more detail,
    My broken power supply has 3 bulged capacitors, 2 are 16volt 1000u and the one that looks worst - 16v680u has a little black around the edges of that cap of it. the black is kinda like dirty oil but is dry and can be scraped. I don't have the same capacitors on hand but have some 16volt 1000u. would it be worth a try using those?
    The monitor was free and is not in pristine condition so if it fails, oh well.



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