lg 60ln5400 power on to lg logo and stuck at a weird screen

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  • Jp06
    Senior Member
    • May 2016
    • 127
    • Usa
    #1

    lg 60ln5400 power on to lg logo and stuck at a weird screen

    Happy holidays everyone,
    I have a lg tv (60ln5400) stuck screen issue and hoping that someone could tell me what it is and how to fix it.
    I lost the power cord and remote so i got a replacement cord on amazon. When i plugged it in, the tv came on without having to press the power button. The lg logo appeared and went straight to this screen with the circle at the bottom right and it's stuck there (refer to images please). There are no responses with any buttons from the back of tv.
    I baked the main board at 385F for 10min and have the same results.
    Thank you so much for any helps.
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    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12196
      • U.S.
      #2
      Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

      Could be a bad eeprom, that's one of the symptoms.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12196
          • U.S.
          #3
          Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

          Ic 104, try heating it with a hairdryer or cooling with freeze spray or upside down can of duster, then plug in tv and try it, see if there's any change, even if only for a while.

            Comment

            • Jp06
              Senior Member
              • May 2016
              • 127
              • Usa
              #4
              Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

              Thanks, I will try that out tonight. I had a feeling that i might need to buy a new main board.

                Comment

                • nomoresonys
                  Badcaps Legend
                  • Jan 2013
                  • 12196
                  • U.S.
                  #5
                  Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                  Replacement mainboard is probably the best bet, specially if fault can't be pinpointed.
                  Last edited by nomoresonys; 12-02-2019, 12:53 PM.

                    Comment

                    • nomoresonys
                      Badcaps Legend
                      • Jan 2013
                      • 12196
                      • U.S.
                      #6
                      Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                      Took a look around the net, most say sold out, best I see is there for 110 bux, there is a make offer option also: https://www.ebay.com/itm/LG-60LN5400....c100290.m3507

                        Comment

                        • nicholas1110
                          Senior Member
                          • Aug 2012
                          • 127
                          • usa
                          #7
                          Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                          From the picture it appears that it is trying to lower the volume as you can see the - symbol is highlighted red. I suggest unplugging the buttons and see if the fault goes away.

                            Comment

                            • Jp06
                              Senior Member
                              • May 2016
                              • 127
                              • Usa
                              #8
                              Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                              I did what Nomoresonys and Nicholas suggested and got no changes. What seems odd is why does it power up right away when I plugged the power in (without having to press the power button). Can a bad ic104 or main board causes that or is it short circuit somewhere?
                              Last edited by Jp06; 12-03-2019, 07:48 AM.

                                Comment

                                • nomoresonys
                                  Badcaps Legend
                                  • Jan 2013
                                  • 12196
                                  • U.S.
                                  #9
                                  Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                                  Yes bad eeprom can do that.

                                    Comment

                                    • Jp06
                                      Senior Member
                                      • May 2016
                                      • 127
                                      • Usa
                                      #10
                                      Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                                      Thanks Nomoresony, I will get a new replacement board.

                                        Comment

                                        • mmartell
                                          Badcaps Legend
                                          • Oct 2013
                                          • 3189
                                          • Canada
                                          #11
                                          Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                                          Originally posted by Jp06
                                          I did what Nomoresonys and Nicholas suggested and got no changes. What seems odd is why does it power up right away when I plugged the power in (without having to press the power button). Can a bad ic104 or main board causes that or is it short circuit somewhere?
                                          Most times the main board remembers the state it was in when power was removed. IOW if you could power it off with the remote then unplug the power upon plugging it back in it would return to standby instead of "on". Try it with another TV you have.

                                            Comment

                                            • Unspun01
                                              Badcaps Veteran
                                              • Jun 2011
                                              • 343
                                              • Canada
                                              #12
                                              Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                                              Originally posted by nicholas1110
                                              From the picture it appears that it is trying to lower the volume as you can see the - symbol is highlighted red. I suggest unplugging the buttons and see if the fault goes away.
                                              I agree.

                                              Volume down button is highlighted in red. It appears the button is pressed, or some wire is pinched/shorted and makes the TV think the button is pressed.

                                              Did you disconnect the buttons from the wire harness only? or did you disconnect the wire harness from the mainboard. If it is a bad wire, try disconnecting the harness from the mainboard.

                                              Could also be a bad de-coupling capacitor or pull-up/pull-down resistor on the volume down input line to the processor. If you can figure out which line is being pulled down, you may be able to force it the other way.

                                              You could also try shorting pins 5-6 on the 8-leg SOIC EEPROM/SPIFlash chip when you plug in the TV. This will interrupt communication to and from the EEPROM IC and could allow you to start the TV.

                                                Comment

                                                • nomoresonys
                                                  Badcaps Legend
                                                  • Jan 2013
                                                  • 12196
                                                  • U.S.
                                                  #13
                                                  Re: lg 60ln5400 power on to lg logo and stuck at a weird screen

                                                  For sure shorting pins 5-6 might work, don't cost anything to try.

                                                    Comment

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