another lg 32lc2d-ue power up problem

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  • baddawg1991
    New Member
    • Oct 2015
    • 7
    • United States

    #1

    another lg 32lc2d-ue power up problem

    The tv used to take a while to turn on, making a high pitch whining sound, and eventually the tv stopped working. Will attempt to turn itself on with led blinking green as soon as i plug the power cable in. All buttons power included are inop at this time. It will then after a few seconds go solid green, but no display, no sound, and power button will not work. And a high pitch whibing from inside during the whole process from the moment power cable is plugged in and led blinks. After a few minutes it shuts itself off, led goes red. Power button will work to turn it back on at this point, and process repeats. Took it apart to find one capacitor swelled, so I replaced it with good soldering (a friend who works aerospace building circuit boards for 747's soldered it in for me.) Still does the same thing. I noticed the whining sound to be coming from a yellow component next to the large rubber coated (i believe its a capacitor says 450v if i remember right and is black rubber coated) in the center of the board. Checking power, i had 11.81-11.9 volts on all 12v pins, 6.02 to 6.06 on the 6v pins nd 4.98v on the 5v pins. All consistent, however I only show 1.3v on the 3.4v pins showing a problem at the 3.4v. Im no tv expert, but i work on volkswagen electrical for a dealership, so i know enough to do the easy parts around electrical systems. Not sure what my problem is and im hoping someone can help me out. Thanks in advance! Picture attatched shows the component whining i am speaking of, which is above the large capacitor near center of the board. (Circled in black) Again, im no expert but hey thats what this discussion is for right? Thanks again!
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: another lg 32lc2d-ue power up problem

    Bad cap can look normal, I would have recap the board since one is already bad. I am sure your friend has good cap meter that can do all kind of test on the caps.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain

      #3
      Re: another lg 32lc2d-ue power up problem

      Replace all the caps on that Psu very common failure on these is caps failing with out swelling.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

      Comment

      • vinceroger69
        Badcaps Legend
        • Mar 2012
        • 6714
        • uk

        #4
        Re: another lg 32lc2d-ue power up problem

        Yes a full recap is always advisable first theres also a ic on the underside of the psu can cause this too theres a few threads relating to this
        https://www.badcaps.net/forum/showth...ight=lg+32lc2d
        https://www.badcaps.net/forum/showth...ight=lg+32lc2d
        Last edited by vinceroger69; 10-04-2015, 11:56 AM.

        Comment

        • baddawg1991
          New Member
          • Oct 2015
          • 7
          • United States

          #5
          Re: another lg 32lc2d-ue power up problem

          Okay i will give yhe 20$ shot on a set of caps. And sorry, but what part are you referring to when you say ic? Can you point it out in a photo? Thanks for the patience and thanks for all the help. You guys are awesome

          Comment

          • vinceroger69
            Badcaps Legend
            • Mar 2012
            • 6714
            • uk

            #6
            Re: another lg 32lc2d-ue power up problem

            first link post 9 has a photo with it highlighted do the recap first and go from there is i was you

            Comment

            • baddawg1991
              New Member
              • Oct 2015
              • 7
              • United States

              #7
              Re: another lg 32lc2d-ue power up problem

              Is the ic something i can go purchase from radio shack? Or is there any info on what to look for if it were to be bad?

              Comment

              • vinceroger69
                Badcaps Legend
                • Mar 2012
                • 6714
                • uk

                #8
                Re: another lg 32lc2d-ue power up problem

                on top of the ic there some writing/numbers you would have to order it online not sure radio shack would carry it. try the re cap first see how it goes, and maybe if you havent read the two links ive posted fully as one of the 3.4 volts does seem to run low.

                Comment

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