sharp aquos LC-80LE632U led tv lamp error

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: sharp aquos LC-80LE632U led tv lamp error

    The LEDs will be driven by a constant current circuit. The constant current circuit will increase the voltage the LEDs are driven with until the current matches. If an LED is open the voltage will hit an over-voltage threshold and the PSU will shut down.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA

      #22
      Re: sharp aquos LC-80LE632U led tv lamp error

      Good to know. Looks like ill be pulling the panel apart tonight.
      Did I leave the soldering iron on?

      Comment

      • capkid
        Badcaps Legend
        • Oct 2010
        • 1339
        • United States

        #23
        Re: sharp aquos LC-80LE632U led tv lamp error

        "hey all well I picked up this 80 inch Sharp Aquos" - LOL. Someone must be made of money to just give up on an 80-inch TV. I'm off to do a Craigslist search.
        Last edited by capkid; 10-01-2013, 09:20 PM.
        LG Plasma Mal-Discharge Correction Service

        Comment

        • freakaftr8
          Badcaps Legend
          • Oct 2012
          • 3743
          • USA

          #24
          Re: sharp aquos LC-80LE632U led tv lamp error

          Well I pulled the panel and powered up the tv. Every LED is lighting up. I cannot get a reading from each strip. Do I have to measure every diode independently? They all light up the same lumens as well.It is backlit.
          Did I leave the soldering iron on?

          Comment

          • freakaftr8
            Badcaps Legend
            • Oct 2012
            • 3743
            • USA

            #25
            Re: sharp aquos LC-80LE632U led tv lamp error



            here it is. All leds lit. Quick snapshot before it cycled off to error blinks.
            Did I leave the soldering iron on?

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #26
              Re: sharp aquos LC-80LE632U led tv lamp error

              Boy, what did you use to lift 80" LCD panel?
              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

              • freakaftr8
                Badcaps Legend
                • Oct 2012
                • 3743
                • USA

                #27
                Re: sharp aquos LC-80LE632U led tv lamp error

                My naugin. Lol. Just taped the carriers to the screen and lifted it out. It was tricky!
                Did I leave the soldering iron on?

                Comment

                • freakaftr8
                  Badcaps Legend
                  • Oct 2012
                  • 3743
                  • USA

                  #28
                  Re: sharp aquos LC-80LE632U led tv lamp error

                  Well screens back in. Obviously the led array is not the problem. Now im looking into power supply. Especially the led controller.
                  Did I leave the soldering iron on?

                  Comment

                  • freakaftr8
                    Badcaps Legend
                    • Oct 2012
                    • 3743
                    • USA

                    #29
                    Re: sharp aquos LC-80LE632U led tv lamp error

                    Led controller IR2E67M sharp manufactured. What pin does led monitoring short and open led monitoring? Thinking of "temporarily" disabling it.
                    it's obviously a false code all the LED's are working perfectly
                    Did I leave the soldering iron on?

                    Comment

                    • freakaftr8
                      Badcaps Legend
                      • Oct 2012
                      • 3743
                      • USA

                      #30
                      Re: sharp aquos LC-80LE632U led tv lamp error

                      Well in other sharp tv's like the 32 inch there is a chip cap C7558 that you can bridge to get the ic to not time out and throw an error code. I wonder if that applies to this design as well? I am looking for C7558 and cannot find it.
                      Did I leave the soldering iron on?

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #31
                        Re: sharp aquos LC-80LE632U led tv lamp error

                        Yeah there probably will be a timer cap.
                        Can you post a picture of the LED controller?
                        Also, check LAMP ERROR signal, if present, from PSU to main - you may be able to jumper this.
                        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • freakaftr8
                          Badcaps Legend
                          • Oct 2012
                          • 3743
                          • USA

                          #32
                          Re: sharp aquos LC-80LE632U led tv lamp error

                          Got a pic, ill upload it. What would I short lamp error signal to on the wire loom to the mainboard. Ground possibly?

                          Pin22 on cable is just stated error. Thats it is this lamp error possibly?
                          Did I leave the soldering iron on?

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #33
                            Re: sharp aquos LC-80LE632U led tv lamp error

                            Yeah through a 100 ohm resistor to limit current though.
                            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                            Comment

                            • freakaftr8
                              Badcaps Legend
                              • Oct 2012
                              • 3743
                              • USA

                              #34
                              Re: sharp aquos LC-80LE632U led tv lamp error



                              led controller/ driver
                              Did I leave the soldering iron on?

                              Comment

                              • freakaftr8
                                Badcaps Legend
                                • Oct 2012
                                • 3743
                                • USA

                                #35
                                Re: sharp aquos LC-80LE632U led tv lamp error

                                Btw I used a 150 ohm from error pin to ground. Same issue.
                                Did I leave the soldering iron on?

                                Comment

                                • freakaftr8
                                  Badcaps Legend
                                  • Oct 2012
                                  • 3743
                                  • USA

                                  #36
                                  Re: sharp aquos LC-80LE632U led tv lamp error

                                  Here's the whole back side of the board


                                  Did I leave the soldering iron on?

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #37
                                    Re: sharp aquos LC-80LE632U led tv lamp error

                                    Ugh, well it's probably a semi custom Sharp IC without a datasheet.
                                    Check LAMP ERROR what does it do? Go high, low, what? After this, BL ON/OFF (or similar) changes too?
                                    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                    Comment

                                    • johnboy1313
                                      Badcaps Legend
                                      • Nov 2012
                                      • 1959
                                      • USA

                                      #38
                                      Re: sharp aquos LC-80LE632U led tv lamp error

                                      Originally posted by freakaftr8
                                      What happens if u put in your old board?
                                      When I put the old board back in, it worked fine but no HDMI's. I wound up pulling the EEPROM from the old board and putting in on the new board. Now everything works but the WI-FI, which did work on the old board. I haven't figured that one out yet. Ethernet does work however.

                                      Comment

                                      • budm
                                        Badcaps Legend
                                        • Feb 2010
                                        • 40746
                                        • USA

                                        #39
                                        Re: sharp aquos LC-80LE632U led tv lamp error

                                        I hate EEPROM problems!
                                        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

                                        • freakaftr8
                                          Badcaps Legend
                                          • Oct 2012
                                          • 3743
                                          • USA

                                          #40
                                          Re: sharp aquos LC-80LE632U led tv lamp error

                                          Heres the pinout.


                                          Did I leave the soldering iron on?

                                          Comment

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