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lg tv 42lv450 does not start

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    #21
    Re: lg tv 42lv450 does not start

    You did remove the Pin from the connector at the main board 1st right for DRV-ON?
    Did I leave the soldering iron on?

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      #22
      Re: lg tv 42lv450 does not start

      but if I unplug the connector from the motherboard how do I turn on the TV?
      Attached Files

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        #23
        Re: lg tv 42lv450 does not start

        You will not be unplugging the whole connector just the individual pin for that DRV-ON. You can use a knife tip To pull up the plastic tab what that will allow the pin to come out
        Did I leave the soldering iron on?

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          #24
          Re: lg tv 42lv450 does not start

          I did not understand, do I have to cut it?
          Attached Files

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            #25
            Re: lg tv 42lv450 does not start

            now I understand sorry, but the DRV is not the first to the right does not do anything? Here's the picture
            Attached Files

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              #26
              Re: lg tv 42lv450 does not start

              I tried to disconnect the pin as pictured and the TV turns on and remains the black screen, if I try to disconnect the 1st right from the motherboard the TV does not turn on has the initial problem or red led flashing white flashing and then nothing

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                #27
                Re: lg tv 42lv450 does not start

                nothing I also removed the DRV ON 3.5v the relay snaps but the TV does not stay lit red LED that flashes, after the flashing white and after no LED help

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                  #28
                  Re: lg tv 42lv450 does not start

                  Help me! Please

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                    #29
                    Re: lg tv 42lv450 does not start

                    So what your saying is back to trhe way it was with no DRV-ON connected and pin back the way it was your not getting any backlights?
                    Did I leave the soldering iron on?

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                      #30
                      Re: lg tv 42lv450 does not start

                      practically with the jumper between pwr on and 3.5 volts the tv first showed the LG logo. Now always with only the jumper between PWR ON and 3.5 volts the TV does not start, the red LED flashes, the white flashes and then goes off
                      Last edited by Moddingscreen; 12-30-2017, 04:42 PM.

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                        #31
                        Re: lg tv 42lv450 does not start

                        The DVR ON I removed it from 3.5 volts

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                          #32
                          Re: lg tv 42lv450 does not start

                          with only the PWR ON at 3.5v the TV turned on and for a few seconds showed as photos
                          Attached Files

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                            #33
                            Re: lg tv 42lv450 does not start

                            while now the relay is triggered the red LED lights up, after the white led and then dies

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                              #34
                              Re: lg tv 42lv450 does not start

                              So do you get the LG logo now or not?
                              Did I leave the soldering iron on?

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                                #35
                                Re: lg tv 42lv450 does not start

                                No, I'm at the starting point with the only difference that before the relay did not attack, now it attacks but the TV does not start

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                                  #36
                                  Re: lg tv 42lv450 does not start

                                  With the DRV-ON removed?
                                  Did I leave the soldering iron on?

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                                    #37
                                    Re: lg tv 42lv450 does not start

                                    exactly

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                                      #38
                                      Re: lg tv 42lv450 does not start

                                      You have a mainboard problem. Most likely the main processor on the board or a voltage regulator not sending PWR-ON. Id try replacing mainboard
                                      Did I leave the soldering iron on?

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                                        #39
                                        Re: lg tv 42lv450 does not start

                                        but because before he could make me display the LG logo and now not?

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                                          #40
                                          Re: lg tv 42lv450 does not start

                                          but the power on in this way is not bypass?
                                          Attached Files

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