Problem with PSU on LG TV

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  • Mikeyboy2007
    Badcaps Veteran
    • Mar 2013
    • 745
    • Scotland
    #1

    Problem with PSU on LG TV

    Hi guys i am having an issue with a LG 42LD450 tv right now. when you switch tv on the power light goes blue and screen goes on almost instantly then backlight goes out again but then as tv starts up backlight goes back on before shutting off to standby. the board in this tv is EAX61124201/15 and i had another lying around so checked tv with that and seems to work fine but i need the board for another tv so is there any way i can repair this board, im guessing it has something to do with the inverter part of the PSU just unsure which part/s

    any help would be grateful
    Tags: None
    • CapLeaker
      Leaking Member
      • Dec 2014
      • 7990
      • Canada
      #2
      Re: Problem with PSU on LG TV

      Put the board back in, unplug the power cable to the backlight inverter board and see if the TV stays on (without the backlights working of course). The LCD still should work, you may need a good flashlight.

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain
          #3
          Re: Problem with PSU on LG TV

          Originally posted by CapLeaker
          Put the board back in, unplug the power cable to the backlight inverter board and see if the TV stays on (without the backlights working of course). The LCD still should work, you may need a good flashlight.
          Unless the psu has a fault and is shutting its self down I doubt unplugging the backlight will have much affect if any.
          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

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870
              #4
              Re: Problem with PSU on LG TV

              Looks like there is a repair kit for these 8 or 9 caps (small ones)
              Suggest post good clear pictures front and back of your board - You have been on here long enough to know that is the usual starting point?
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA
                  #5
                  Re: Problem with PSU on LG TV

                  Is this the exact match?
                  http://www.shopjimmy.com/lg-eay60869...upply-unit.htm
                  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

                    • Mikeyboy2007
                      Badcaps Veteran
                      • Mar 2013
                      • 745
                      • Scotland
                      #6
                      Re: Problem with PSU on LG TV

                      Budm that is an exact match. i seen the repair kit on ohmsupplies repair kit229 but by the looks of the board the caps look absolutely fine. will get a picture up.

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA
                          #7
                          Re: Problem with PSU on LG TV

                          I need good clear pictures of the bottom side of the board, straight shot of the whole board, and then in multiple small sections.
                          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

                            • Mikeyboy2007
                              Badcaps Veteran
                              • Mar 2013
                              • 745
                              • Scotland
                              #8
                              Re: Problem with PSU on LG TV

                              sorry i took so long getting back, ended up just swapping PSU with the one i had that was working.

                                Comment

                                • matyka
                                  Senior Member
                                  • Jan 2015
                                  • 179
                                  • Uk
                                  #9
                                  Re: Problem with PSU on LG TV

                                  Hello,I need some help with this power board I have the same EAX61124201/15 on my lg 42ld490 .
                                  I have changed the fuse and 2sk3868 (used 2sk1507) was shorted.

                                  After changing the fuse and mosfet tv has the same fault standby red light flashes slowly .
                                  I have only the 3.4v present.
                                  Attached Files

                                    Comment

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