Announcement

Collapse
No announcement yet.

Sharp Aquos LC-60LE600U no power period

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #21
    Re: Sharp Aquos LC-60LE600U no power period

    You think the key control board? there must be a diagram for checking somewhere

    Comment


      #22
      Re: Sharp Aquos LC-60LE600U no power period

      Pin 22 ERROR = 0.95V
      The problem right now is that we do not know what the value of this Voltahe should be for the main board to think that it is normal, this error signal may be keeping the TV from sending the control signals, I cannot find much info form most of the Sharp TV service manual to tell me what the normal condition should be.
      Need to do more research or if someone has working board can take the reading for us to verify.
      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


        #23
        Re: Sharp Aquos LC-60LE600U no power period

        I did some searching in BC, it looks like the ERROR should be high. Looking through the PDF in the link, it looks to be that the ERROR pin is for the Backlight Error.
        https://www.badcaps.net/forum/showth...rp%22+%22pd%22

        https://www.badcaps.net/forum/showpo...92&postcount=1
        Attached Files
        Last edited by budm; 02-01-2017, 09:21 PM.
        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


          #24
          Re: Sharp Aquos LC-60LE600U no power period

          Thanks bud I will try to check the key button controller, and are there any key components on the main board I should check since there is an issue? How are you making out with the LC-70LE757U? if you need and readings etc. we could take mine off the mount to help you out- let me know

          Comment


            #25
            Re: Sharp Aquos LC-60LE600U no power period

            Another thread to follow:
            https://www.badcaps.net/forum/showth...982#post722982
            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


              #26
              Re: Sharp Aquos LC-60LE600U no power period

              I think the reset procedure is to hold down input and vol- at the same time you plug it in.

              Comment


                #27
                Re: Sharp Aquos LC-60LE600U no power period

                I'm going to go through it again I think I tried all that- how did you make out on yours with the LED issue?

                Comment


                  #28
                  Re: Sharp Aquos LC-60LE600U no power period

                  Having same issue no power at pin 1-2 any ever resolved this issue. My house was struck by lighting

                  Comment


                    #29
                    Re: Sharp Aquos LC-60LE600U no power period

                    Hi All, I have a LC-60LE600U with blown fuse. I did quick check and looks like its rectifier is fried. Hence I am looking for actual part numbers for the Bridge rectifier, the Q7801 and R7816. Does anyone have schematics?

                    Thanks in advance for your help!!

                    Comment


                      #30
                      Re: Sharp Aquos LC-60LE600U no power period

                      Originally posted by Adubey View Post
                      Hi All, I have a LC-60LE600U with blown fuse. I did quick check and looks like its rectifier is fried. Hence I am looking for actual part numbers for the Bridge rectifier, the Q7801 and R7816. Does anyone have schematics?

                      Thanks in advance for your help!!
                      Just checked even the variastor is blown but its number is visible so I can get a replacement for it.

                      Comment


                        #31
                        Re: Sharp Aquos LC-60LE600U no power period

                        There should be part number printed on the Bridge and the Q7801 (PFC MOSFET).
                        If that PFC MOSFET is blown, more likely the components connected to the Gate and the PFC IC are likely to be damaged also.
                        You should attach the pictures of the board?
                        What is the P/N of the power supply board?
                        Sharp RUNTKB057WJQZ (DPS-168JP A)???
                        MOV Z7001 is blown? 150V rating MOV with about the same Dia, will be fine.
                        What is the history of the TV? Hit by power surge?

                        Pictures provided by shopjimmy.
                        Attached Files
                        Last edited by budm; 10-27-2020, 10:11 PM.
                        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


                          #32
                          Re: Sharp Aquos LC-60LE600U no power period

                          Thanks for the superfast response BUDM. Do you know the value of R7816? Looks like owner replaced (or got it replaced) the resistor. Currently it has a 6.8 ohm resistor. Not sure if thats the right value.

                          If that PFC MOSFET is blown, more likely the components connected to the Gate and the PFC IC are likely to be damaged also.
                          You should attach the pictures of the board?
                          What is the P/N of the power supply board?
                          Sharp RUNTKB057WJQZ (DPS-168JP A)??? yes its DPS-168JP A
                          MOV Z7001 is blown? 150V rating MOV with about the same Dia, will be fine.
                          What is the history of the TV? Hit by power surge? I got it from Craigslist hence no information on history.

                          Pictures provided by shopjimmy.[/QUOTE]

                          Comment


                            #33
                            Re: Sharp Aquos LC-60LE600U no power period

                            R7816 is the current sensing resistor connected to the Source pin of the PFC MOSFET, when MOSFET shorted out it will blow that Source resistor, it is 0.56 Ohm Flame proof type resistor, you can use MOX (Metal Oxide) power resistor.
                            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


                              #34
                              Re: Sharp Aquos LC-60LE600U no power period

                              Originally posted by budm View Post
                              R7816 is the current sensing resistor connected to the Source pin of the PFC MOSFET, when MOSFET shorted out it will blow that Source resistor, it is 0.56 Ohm Flame proof type resistor, you can use MOX (Metal Oxide) power resistor.
                              Thank you once again Budm!

                              Comment


                                #35
                                Re: Sharp Aquos LC-60LE600U no power period

                                I was dignosing the TV further and found on the board KF905FM04 and found the diode 9601 is bad. Does anyone know whats the value of this diode?

                                Comment


                                  #36
                                  Re: Sharp Aquos LC-60LE600U no power period

                                  Originally posted by budm View Post
                                  R7816 is the current sensing resistor connected to the Source pin of the PFC MOSFET, when MOSFET shorted out it will blow that Source resistor, it is 0.56 Ohm Flame proof type resistor, you can use MOX (Metal Oxide) power resistor.
                                  Budm, what is the wattage of this resistor? 1W or 2W?

                                  Comment


                                    #37
                                    Re: Sharp Aquos LC-60LE600U no power period

                                    It looks to be 2W but you should measure the dimension to get the correct size.
                                    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


                                      #38
                                      Re: Sharp Aquos LC-60LE600U no power period

                                      Originally posted by budm View Post
                                      It looks to be 2W but you should measure the dimension to get the correct size.
                                      thx again Budm

                                      Comment


                                        #39
                                        Re: Sharp Aquos LC-60LE600U no power period

                                        Originally posted by Adubey View Post
                                        I was diagnosing the TV further and found on the board KF905FM04 and found the diode 9601 is bad. Does anyone know whats the value of this diode?
                                        I have attached the picture of the part.

                                        Thanks in advance!
                                        Attached Files

                                        Comment


                                          #40
                                          Re: Sharp Aquos LC-60LE600U no power period

                                          Originally posted by Adubey View Post
                                          I have attached the picture of the part.

                                          Thanks in advance!
                                          What is this board you are referring to?
                                          Can you zoom out so we can see what connector it is connected too? It looks to be protection diode.
                                          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

                                          Working...
                                          X