LG 55LS4600 powers on with backlight no image

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  • woodman45
    Senior Member
    • Aug 2015
    • 87
    • U.S.A
    #21
    Re: LG 55LS4600 powers on with backlight no image

    Originally posted by budm
    No power to TV, set meter to Ohm mode, 200 Ohm scale, then just check the resistance between the two legs of each cap.
    Looks like something got spilled in it probably some type of cleaner.i cleaned it with alcohol.
    My readings on the cap to the right in Ohm mode@200 1.8
    Couldn’t get a reading on cap to the left. Cap to left didn’t beep in continuity mode. However cap to the right did beep.
    I know the pics aren’t the best. I’ll try to take better ones later.
    Attached Files
    Last edited by woodman45; 12-26-2019, 01:30 PM.

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      • woodman45
        Senior Member
        • Aug 2015
        • 87
        • U.S.A
        #22
        Re: LG 55LS4600 powers on with backlight no image

        https://www.badcaps.net/forum/showth...ht=lg+55ls4600

        Duh I just found this.

          Comment

          • woodman45
            Senior Member
            • Aug 2015
            • 87
            • U.S.A
            #23
            Re: LG 55LS4600 powers on with backlight no image

            Thanks to everyone who has helped me on this. I have a full pic now but color is off. I'm assuming the tcon. I have another one.
            Attached Files
            Last edited by woodman45; 12-26-2019, 08:23 PM.

              Comment

              • woodman45
                Senior Member
                • Aug 2015
                • 87
                • U.S.A
                #24
                Re: LG 55LS4600 powers on with backlight no image

                https://www.youtube.com/watch?v=jLd6QO7Z7m4

                This video helped a lot also.

                  Comment

                  • woodman45
                    Senior Member
                    • Aug 2015
                    • 87
                    • U.S.A
                    #25
                    Re: LG 55LS4600 powers on with backlight no image

                    Originally posted by budm
                    It can be as simple as shorted out caps on the tab bonding board of the bad side.
                    It was one of the caps that was shorted on the tab bonding board. Thanks for pointing me in the right direction.

                      Comment

                      • woodman45
                        Senior Member
                        • Aug 2015
                        • 87
                        • U.S.A
                        #26
                        Re: LG 55LS4600 powers on with backlight no image

                        Changed out the tcon board looks good.again thanks to everyone that helped.
                        Attached Files

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                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA
                            #27
                            Re: LG 55LS4600 powers on with backlight no image

                            Thanks for the follow-up.
                            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

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