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TV Sharp AQUOS LC-60LE635E TV not power ON

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    #81
    Re: TV Sharp AQUOS LC-60LE635E TV not power ON

    Nomoresonys:

    no my t-con original board is burnt out and not working.
    i bought chinese via aliexpress, and it didn't work properly. was not compatible with my TV.
    then I found a used original T-con board model tv LC60LE635E on the classifieds
    and this one works properly

    finally.
    another tip.
    do not buy a T-Con board from Aliexpress because they are not compatible with European TVs

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      #82
      Re: TV Sharp AQUOS LC-60LE635E TV not power ON

      I see, thanks for clarification, glad you got it working.

      Comment


        #83
        Re: TV Sharp AQUOS LC-60LE635E TV not power ON

        How do you forced the backlight to turn on?

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          #84
          Re: TV Sharp AQUOS LC-60LE635E TV not power ON

          Hi,

          I also have a Sharp LC-60LE63E TV with Power supply board DPS-162KP B. Set was not switching on and when opened found R7900, IC7903 (physically cracked) and D7908 burnt. All parts have been replaced but R7900 and IC7903 were blown again (with a large spark) when supply has been switched on. Any idea what the problem might be please?

          Thanks

          Clifton11283

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            #85
            Re: TV Sharp AQUOS LC-60LE635E TV not power ON

            make sure the diode is not in backwards.

            Comment


              #86
              Re: TV Sharp AQUOS LC-60LE635E TV not power ON

              Hi,

              Thanks for your reply.

              Diode is soldered correctly. The only mistake I did to be honest is that resistor R7900 was 1/4W instead of 1/2W.

              Clifton

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                #87
                Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                can you post a good clear picture of the area?

                Comment


                  #88
                  Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                  Please find attached a pictures of the power supply board.

                  Thanks again for all your help.
                  Attached Files

                  Comment


                    #89
                    Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                    did you mean D7905 instead of D7908? D7905 looks a little beat up, did you test it or change it out?

                    Comment


                      #90
                      Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                      D7905 when tested with a multimeter looks fine. The black stain visible on the picture is due the spark done by R7900.

                      Thanks

                      Clifton

                      Comment


                        #91
                        Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                        I would build one of these for a few bucks so your not constantly blowing components up, which wastes time and money: https://www.youtube.com/watch?v=k5oNQ1etN2c

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                          #92
                          Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                          I would set meter to ohm mode and check all the diodes and caps thats all not just the electrolytics on the board, all should read pretty high, report any with a low ohm reading.

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                            #93
                            Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                            Can I see a photo of the other side of the board. Check the component with three legs under the heatsink.

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                              #94
                              Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                              Thanks!!

                              Comment


                                #95
                                Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                                During the weekend will try to do this test and get back to you.

                                Comment


                                  #96
                                  Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                                  Hi,

                                  Please find attached a picture of the other side of the PCB. Attached please also find the circuit of the area where I am having issues maybe it helps you in helping me identify where the problem is.

                                  Thanks
                                  Attached Files

                                  Comment


                                    #97
                                    Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                                    Hi,

                                    I have just found low resistance on capacitor c7901 and instead of 100pf it's capacitance is 30pf. Could it be this js the main problem shorting IC 7903 and R7900?

                                    Thanks

                                    Comment


                                      #98
                                      Re: TV Sharp AQUOS LC-60LE635E TV not power ON

                                      could very well be, change it out and see what you get, also measure it out of circuit if you didnt, to be sure.
                                      Last edited by nomoresonys; 10-30-2022, 05:41 PM.

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