Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

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  • Martin_Silberkuhl
    Member
    • Jul 2017
    • 25
    • Germany

    #41
    Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

    No, what I mean is, what is the next step?

    Without a circuit diagram it's not really easy. Normally I would check the voltages on all ICs, but I don't know which voltages.

    What would you do?

    Comment

    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6642
      • Wales

      #42
      Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

      I would say at this point without a schematic I would be looking for a replacement main board or for one being sold with a cracked screen.
      Last edited by dick_barton; 07-19-2017, 07:01 AM.
      Willing to help but I'm no expert.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #43
        Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

        May be you can use ADIM (Analog Dim) control pin and set and forget type so the LED current is set to as low as possible, it will be cheaper than new main board and use it until the main board fails completely.
        BTW, the spec sheet of the IC does not explain how to choose between the PWM and ADIM function. The app notes schematic shows ADIM pin is terminated with a cap to GND for using PWM DIM. You may have to do experiment to see how to use ADMIN (3V is the max level)
        Last edited by budm; 07-19-2017, 10:01 AM.
        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

        • Martin_Silberkuhl
          Member
          • Jul 2017
          • 25
          • Germany

          #44
          Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

          Hey guys,

          thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.

          Comment

          • tijntijn
            New Member
            • Oct 2017
            • 1
            • holland

            #45
            Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

            hallo everybuddy,

            i have the same tv lc60le652e no sound no picture it does power on my qwestion is have you fixed the problem by replacing the mainboard ?

            thanks have a nice day

            tijn

            Comment

            • khizarnld
              New Member
              • Feb 2018
              • 1
              • The Netherlads

              #46
              Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

              Originally posted by Martin_Silberkuhl
              Hey guys,

              thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.
              Good Day.

              I have the exact same model sharp with with the same problem, what have you done with your tv, did you succeeded repairing it, i would appreciate if you let me know what happened to your tv. Maybe you have some info helping me getting my tv back, eager to hear from you,

              Thanks

              Comment

              • vdoru77
                New Member
                • Jun 2018
                • 1
                • Romania

                #47
                Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

                Originally posted by Martin_Silberkuhl
                Hey guys,

                thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.
                Hi there,

                I don't know if it helps but I had the same problem and I solved it by replacing the mainboard.

                Comment

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