Sharp LC-60EQ10U no display code 3-1

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  • Zduncan8
    New Member
    • Mar 2018
    • 5
    • USA

    #1

    Sharp LC-60EQ10U no display code 3-1

    I have a Sharp LC-60EQ10U that does not turn on. Minutes after plugging it in. The power light blinks 3 slow and 1 fast. I have replaced the power board, and still the same issue. Anything I'm missing or do I need to replace the main board? I'm not too tech savvy, just looked like a pretty basic fix. Any help is appreciated.
  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12075
    • U.S.

    #2
    Re: Sharp LC-60EQ10U no display code 3-1

    You may have gotten a faulty board.
    Last edited by nomoresonys; 03-27-2018, 08:48 AM.

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12075
      • U.S.

      #3
      Re: Sharp LC-60EQ10U no display code 3-1

      https://www.youtube.com/watch?v=HaKxWCEaAcw
      This guy fixed his with a new powersupply.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12075
        • U.S.

        #4
        Re: Sharp LC-60EQ10U no display code 3-1

        https://www.youtube.com/watch?v=mUvclBfaMXg power supply testing, BE VERY CAREFUL WITH POWERSUPPLY, VOLTAGE ON PRIMARY/HOT SIDE CAN BE DEADLY, THE CAPACITORS CAN HOLD A VERY BIG CHARGE LONG AFTER TV HAS BEEN UNPLUGGED.

        Comment

        • Zduncan8
          New Member
          • Mar 2018
          • 5
          • USA

          #5
          Re: Sharp LC-60EQ10U no display code 3-1

          Yeah I watched that video. Is the power board the only cause of this code? I plan to test the new power board asap and see if it's doing what it's supposed to. Just curious what the other issue(s) could be.

          Comment

          • Zduncan8
            New Member
            • Mar 2018
            • 5
            • USA

            #6
            Re: Sharp LC-60EQ10U no display code 3-1

            I went to test the board and I am having trouble determining which pin is what. As the pins dont seem to be in any specific order counting them (maybe I'm just overlooking something). I have located the PS ON pin, and it reads 5 volts. I am unable to figure out which pin to jump it too though. As the video lists it as 5VSB, and I do not have that pin. If someone could guide me on which pin to jumper it to, and how the pins are counted itd be much appreciated. I will attach pictures of the labeling. And which pin is the PS ON.

            Comment

            • Zduncan8
              New Member
              • Mar 2018
              • 5
              • USA

              #7
              Re: Sharp LC-60EQ10U no display code 3-1

              Here is the labeling and pin location.
              Attached Files

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: Sharp LC-60EQ10U no display code 3-1

                https://www.badcaps.net/forum/attach...3&d=1522413928
                The exposed pins you can see from the top side of the board are the ODD number pins, the EVEN number pin (you can see where pin 1 is as marked on the board) you will have to access them from the bottom side of the board or from the back side of the connector using probe with skinny tips.
                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

                • amfm144
                  New Member
                  • Apr 2018
                  • 6
                  • United States

                  #9
                  Re: Sharp LC-60EQ10U no display code 3-1

                  I have the same TV and the same issue too. I tested all the pins and was able to pin point 2 pins whose volts did not match with what was listed.

                  Pin 1 & 2 shows 12V on the board but when I tested it Pin 1 only gave me a little more 7V and Pin 2 was 0V.

                  So, does that mean the issue is with both Power and Main boards ?

                  Comment

                  • amfm144
                    New Member
                    • Apr 2018
                    • 6
                    • United States

                    #10
                    Re: Sharp LC-60EQ10U no display code 3-1

                    Sorry, correction Pin 1 gave me a little more than 7V and Pin 2 as 0V

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: Sharp LC-60EQ10U no display code 3-1

                      Originally posted by amfm144
                      Sorry, correction Pin 1 gave me a little more than 7V and Pin 2 as 0V
                      PNL-12V Pin 1 and pin 2 of the connector PD are electrically connected together so pin 2 should also show the same reading as pin 1.
                      The 7V PNL-12V output is more likely due to common fails switched 12V LDO regulator IC Q7120 (KIA378R12PI).
                      See this thread here:
                      https://www.badcaps.net/forum/showth...602#post592602
                      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

                      • amfm144
                        New Member
                        • Apr 2018
                        • 6
                        • United States

                        #12
                        Re: Sharp LC-60EQ10U no display code 3-1

                        Thank you so much for the quick response.

                        Is this regulator located on the power board ? If yes, installing a new power board will fix this issue ?

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA

                          #13
                          Re: Sharp LC-60EQ10U no display code 3-1

                          Originally posted by amfm144
                          Thank you so much for the quick response.

                          Is this regulator located on the power board ? If yes, installing a new power board will fix this issue ?
                          Yes it is on the power supply board, just look for that part I give the info about.
                          That should fix the PNL-12V power supply problem, but I do not what else is wrong with your TV beside the bad PNL-12V, you have to have good power supply first to know if there are other problems with other boards or not.
                          Do you have tools and know how to solder?
                          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

                          • amfm144
                            New Member
                            • Apr 2018
                            • 6
                            • United States

                            #14
                            Re: Sharp LC-60EQ10U no display code 3-1

                            Yeah that makes sense. Unfortunately, I don't. I'm an IT guy so I have 0 experience when it comes to this stuff. Everything I have done so far is from online reading and research.

                            Let me see if I can find any tools and tutorial for soldering.

                            Comment

                            • budm
                              Badcaps Legend
                              • Feb 2010
                              • 40746
                              • USA

                              #15
                              Re: Sharp LC-60EQ10U no display code 3-1

                              I would buy the part and then take the board to good local electronic repair shop and have them install the new part.
                              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

                              • amfm144
                                New Member
                                • Apr 2018
                                • 6
                                • United States

                                #16
                                Re: Sharp LC-60EQ10U no display code 3-1

                                That's a good idea. Thanks a lot.

                                Comment

                                • Andrew F. Ali
                                  Badcaps Legend
                                  • Jan 2014
                                  • 2450
                                  • Trinidad & Tobago

                                  #17
                                  Re: Sharp LC-60EQ10U no display code 3-1

                                  Originally posted by budm
                                  I would buy the part and then take the board to good local electronic repair shop and have them install the new part.
                                  +10...It would be a lot less expensive rather than replacing the PSU. Try to fix the board first and if that does not resolve the PSU issue, then look for anew board.

                                  Comment

                                  • amfm144
                                    New Member
                                    • Apr 2018
                                    • 6
                                    • United States

                                    #18
                                    Re: Sharp LC-60EQ10U no display code 3-1

                                    I ended up getting a used power board from ebay and it worked like a charm. Thank you for all your help.

                                    Comment

                                    • Andrew F. Ali
                                      Badcaps Legend
                                      • Jan 2014
                                      • 2450
                                      • Trinidad & Tobago

                                      #19
                                      Re: Sharp LC-60EQ10U no display code 3-1

                                      Thanks for the follow up.

                                      Comment

                                      • neilc6
                                        Badcaps Legend
                                        • Nov 2015
                                        • 1550
                                        • Canada

                                        #20
                                        Re: Sharp LC-60EQ10U no display code 3-1

                                        Got this model and the owner had tried a second power supply. Both generate a 3-1 error code. Measured the output of Q7120 and it is 12V on the output and not low on the one ps currently installed. TV doesn't turn on and no backlight. Backlights test good with LED tester.

                                        Comment

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