e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

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  • cueballsi
    Member
    • Jul 2020
    • 13
    • United States
    #1

    e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

    Well need some help guys... I removed the drivers and put it all together have some lines.. I think I need to clean the cables and put them back. BUT I noticed the following:

    - I used a OO power cable instead of the [ ]O looking power cable to power up the tv.
    - The LEDs seem to brighten and darken and brighten like a very slow strobe.

    Did I mess up the board with the power cable mess up? I switched to the [ ]O type and still slowly pulses....

    what would make the LEDs do this?

    any help would be appreciated. What should I test? Will the shop Jimmy Referb power board kit fix this?

    Thanks
    Tags: None
    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12090
      • U.S.
      #2
      Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

      What does "removed the drivers" mean?

        Comment

        • cueballsi
          Member
          • Jul 2020
          • 13
          • United States
          #3
          Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

          Originally posted by nomoresonys
          What does "removed the drivers" mean?
          This. It had bad drivers on the LCD...

          https://www.badcaps.net/forum/showthread.php?t=49281

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12090
              • U.S.
              #4
              Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

              Ok, that's what I thought you meant but wasn't sure, assuming you diagnosed properly, try cleaning up any leftover bits of the tabs, sometimes the other side has issues, if that's the case then there's no fixing it.

                Comment

                • cueballsi
                  Member
                  • Jul 2020
                  • 13
                  • United States
                  #5
                  Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                  yeah I followed all the diagnoses ... repaired the mosfet on the TCON board. and removed the drivers on the "bad side"...

                  the LEDs were pretty solid for the first 2-3 mins and then they started to pulse... wasn't sure if I damaged something by using the wrong power cord ... something on the LED driver board, or the power board?

                    Comment

                    • cueballsi
                      Member
                      • Jul 2020
                      • 13
                      • United States
                      #6
                      Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                      bump.. anyone can help???

                      Originally posted by cueballsi
                      yeah I followed all the diagnoses ... repaired the mosfet on the TCON board. and removed the drivers on the "bad side"...

                      the LEDs were pretty solid for the first 2-3 mins and then they started to pulse... wasn't sure if I damaged something by using the wrong power cord ... something on the LED driver board, or the power board?

                        Comment

                        • cueballsi
                          Member
                          • Jul 2020
                          • 13
                          • United States
                          #7
                          Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                          do you know what would trigger the leds dimming and darkening?

                          Originally posted by nomoresonys
                          Ok, that's what I thought you meant but wasn't sure, assuming you diagnosed properly, try cleaning up any leftover bits of the tabs, sometimes the other side has issues, if that's the case then there's no fixing it.

                            Comment

                            • R_J
                              Badcaps Legend
                              • Jun 2012
                              • 9535
                              • Canada
                              #8
                              Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                              You could have one ore more intermittent led's on one of the strips or even a poor connection on one of the strip connectors.

                                Comment

                                • cueballsi
                                  Member
                                  • Jul 2020
                                  • 13
                                  • United States
                                  #9
                                  Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                                  Originally posted by R_J
                                  You could have one ore more intermittent led's on one of the strips or even a poor connection on one of the strip connectors.


                                  interesting ..that would be my luck, right after i take the drivers off, then i get an led issue ....

                                    Comment

                                    • nomoresonys
                                      Badcaps Legend
                                      • Jan 2013
                                      • 12090
                                      • U.S.
                                      #10
                                      Re: e701i-a3 LEDs pulse after removing drivers, and also using wrong power cord

                                      UH oh, what if the backlights were the only problem?

                                        Comment

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