Sharp LC-60LE810UN

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  • jbblackbird
    Member
    • May 2013
    • 21
    • USA

    #21
    Re: Sharp LC-60LE810UN

    alright LED is in place and sitting right on the pads, polarity is correct, and led lights when I test it in diode check. But tv still doesnt power up. I tried the reset procedure forwards and backwards but still a no go. Any ideas anyone?

    Comment

    • Pragmatiko
      Badcaps Veteran
      • Jul 2013
      • 468
      • IT

      #22
      Re: Sharp LC-60LE810UN

      Originally posted by jbblackbird
      alright LED is in place and sitting right on the pads, polarity is correct, and led lights when I test it in diode check. But tv still doesnt power up. I tried the reset procedure forwards and backwards but still a no go. Any ideas anyone?
      If interested i can supply genuine and brand new part. Non single led but complete board.

      Comment

      • tibimakai
        Badcaps Legend
        • Jan 2012
        • 3680
        • USA

        #23
        Re: Sharp LC-60LE810UN

        Maybe the LED driver has a problem too.

        Comment

        • jbblackbird
          Member
          • May 2013
          • 21
          • USA

          #24
          Re: Sharp LC-60LE810UN

          How would I know if driver is bad?

          Comment

          • jbblackbird
            Member
            • May 2013
            • 21
            • USA

            #25
            Re: Sharp LC-60LE810UN

            Originally posted by tibimakai
            Maybe the LED driver has a problem too.
            How do I test the LED driver on the power supply???

            Comment

            • freakaftr8
              Badcaps Legend
              • Oct 2012
              • 3743
              • USA

              #26
              Re: Sharp LC-60LE810UN

              I have an idea I just repaired a 46 inch version of this TV also the sensor pads for the buttons are very sensitive and make sure that the circuit board behind the sensor touch buttons is properly pushed against the panel the plastic panel one of the either power button input button or volume down button are not being recognized. Best thing to do is get some Windex and clean the plastic panel where the sensor touch buttons are and then try again it's going to take some time but fiddle around pressing on the power input volume down and it will reset it's a pain in the butt but it will work eventually. I think this is what a lot of people having a problem with.
              Did I leave the soldering iron on?

              Comment

              • freakaftr8
                Badcaps Legend
                • Oct 2012
                • 3743
                • USA

                #27
                Re: Sharp LC-60LE810UN

                I know its hard to explain but basically with the LC -60LE810UN and the LC-46le810un which both of these I have repaired the same way by bypassing the first led in the strip closest to the connector I had to clean and mess with the sensor buttons for a long time. There is obviously an inherent problem with the sensor activated push buttons. the 46 inch version got to the point where I had to remove the circuit board that is sticky tape onto the plastic panel clean both sides with Windex and then reinstall it clean the front with Windex where the buttons are and then proceeds to try again rubbing my finger all over each buttons to make sure that I've got a good contact on the button. Again I know it sounds weird but after about 45 minutes of messing around I got the TV to power upafter the repair and then I reset the lamp error count and now no problem but still the push buttons are very finicky. if I don't push on the buttons for a period of time like when I'm using the TV and using the remote if I don't use the buttons they will start to act up again and then I have to play with the buttons for a long time to get them to reactivate. I haven't tried but maybe a little heat with a hair dryer on the front face might get them to activate better
                Last edited by freakaftr8; 10-20-2014, 02:01 PM.
                Did I leave the soldering iron on?

                Comment

                • jbblackbird
                  Member
                  • May 2013
                  • 21
                  • USA

                  #28
                  Re: Sharp LC-60LE810UN

                  Ok thanks for the help. But I would also like to test the led drivers. Can you walk me through testing them?

                  Comment

                  • freakaftr8
                    Badcaps Legend
                    • Oct 2012
                    • 3743
                    • USA

                    #29
                    Re: Sharp LC-60LE810UN

                    Unfortunately that I cannot help you with. Never fooled with the led driver on this particular power supply. Just know the general checks for shorts
                    Did I leave the soldering iron on?

                    Comment

                    • tibimakai
                      Badcaps Legend
                      • Jan 2012
                      • 3680
                      • USA

                      #30
                      Re: Sharp LC-60LE810UN

                      I have only repaired a Sony TV, which had a bad LED driver board. That board, it was separate board and not included in the power supply.
                      It had six ICs and they all had some test points and by comparing them, I had found one, with different reading than the others and then I knew, which one it was the faulty one.
                      You should post some pictures with that board, top and bottom.

                      Comment

                      • jbblackbird
                        Member
                        • May 2013
                        • 21
                        • USA

                        #31
                        Re: Sharp LC-60LE810UN

                        I have removed vol, ch, and input board from chassis to ensure that I am making contact with buttons. Reset code still doesnt work. Also Im not getting any standby voltage. Shouldnt I at least get 5v standby? Can anyone help?

                        Comment

                        • freakaftr8
                          Badcaps Legend
                          • Oct 2012
                          • 3743
                          • USA

                          #32
                          Re: Sharp LC-60LE810UN

                          Well no standby voltage is another problem altogether. So you are not getting a 1-1 error flash upon plugging it in?
                          Did I leave the soldering iron on?

                          Comment

                          • Alastair E
                            Chief Womble
                            • Mar 2013
                            • 1963
                            • U.K.

                            #33
                            Re: Sharp LC-60LE810UN

                            This thread is a classic example of--

                            How NOT to try and repair a TV set!

                            Should Always start with a methodical approach, not just tear the screen apart and suspect LED's being faulty--Just because it May be a common fault on cruddy LED sets!--For one thing, it wastes herds of time and risks severe damage to the delicate screen itself!

                            So--LED Replaced, and the set is exactly the same--No Surprise there, as that wasn't the Principal fault in the first place!

                            Start at the PSU, Has it got its 5V STD-By supply?
                            Is PS-On active?
                            Is BL-On Active?

                            The answer to the above will start you in the Right direction!
                            TELEFIX

                            How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
                            http://www.irf.com/technical-info/appnotes/an-1088.pdf
                            PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

                            Comment

                            • jbblackbird
                              Member
                              • May 2013
                              • 21
                              • USA

                              #34
                              Re: Sharp LC-60LE810UN

                              Originally posted by Alastair E
                              This thread is a classic example of--

                              How NOT to try and repair a TV set!

                              Should Always start with a methodical approach, not just tear the screen apart and suspect LED's being faulty--Just because it May be a common fault on cruddy LED sets!--For one thing, it wastes herds of time and risks severe damage to the delicate screen itself!

                              So--LED Replaced, and the set is exactly the same--No Surprise there, as that wasn't the Principal fault in the first place!

                              Start at the PSU, Has it got its 5V STD-By supply?
                              Is PS-On active?
                              Is BL-On Active?

                              The answer to the above will start you in the Right direction!
                              How do you know it isnt a combination of the LED and the power supply? Power supply was replaced the very first time I looked at this set and it still didnt power on. So after going further and researching I discovered it may be a LED at fault. Which I found a bad one right next to the connection like many have said in these forums. I have replaced this LED and am still getting an error code.

                              So since I have no 5v stdby should I assume it is the power supply? Seems like this is the mostly likely problem because standby is supposed to be there no matter what....right?

                              Comment

                              • freakaftr8
                                Badcaps Legend
                                • Oct 2012
                                • 3743
                                • USA

                                #35
                                Re: Sharp LC-60LE810UN

                                so let's get this straight. Upon plugging it in you do not have any flashing inverted V at all? As in the LED for the power light is not flashing?

                                you're trying to test the standby 5 volts correct not the 5 volt? Because you will not have any 5 volt unless the TV powers up you will always have standby 5 volt.
                                Did I leave the soldering iron on?

                                Comment

                                • budm
                                  Badcaps Legend
                                  • Feb 2010
                                  • 40746
                                  • USA

                                  #36
                                  Re: Sharp LC-60LE810UN

                                  In post #1 "The problem I have is the short blink, long blink error." You must have had 5VSTBY otherwise you will not be seeing any error lights, but now you no longer have 5VSTBY?
                                  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

                                  • jbblackbird
                                    Member
                                    • May 2013
                                    • 21
                                    • USA

                                    #37
                                    Re: Sharp LC-60LE810UN

                                    Ok sorry for the mis-understanding, I have ordered another power supply and replaced it. Same problem 1 long and 1 short inverted "v". Im assuming I should replace the Main Board now but have no luck finding it in stock anywhere. Is there a component set available to repair the Main Board?

                                    Comment

                                    • johnboy1313
                                      Badcaps Legend
                                      • Nov 2012
                                      • 1959
                                      • USA

                                      #38
                                      Re: Sharp LC-60LE810UN

                                      What's the board number?

                                      Comment

                                      • jbblackbird
                                        Member
                                        • May 2013
                                        • 21
                                        • USA

                                        #39
                                        Re: Sharp LC-60LE810UN

                                        DKEYMF452FM11 is the part number and I was able to find one on ebay just recently. Once I get it I will report back with results. Does anyone know if maybe the t-con board could also be responsible for these problems?

                                        Comment

                                        • jbblackbird
                                          Member
                                          • May 2013
                                          • 21
                                          • USA

                                          #40
                                          Re: Sharp LC-60LE810UN

                                          Ok here is the summation of everything I have done.
                                          1. Tested all and Replaced burned out led on led strip
                                          2. Replaced PSU
                                          3. Replaced Mainboard
                                          4. Tried button reset combination
                                          5. I have 5v BU5v (pin 11)

                                          but...
                                          I still have 1-1 flash code. Should I give up and throw this set away? Im thinking maybe the led strips are bad even though I have tested each one manually. Help?!?

                                          Comment

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