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Sony KDL-52ex700 and others 6 blink possible fix

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    Sony KDL-52ex700 and others 6 blink possible fix

    have a kdl-52ex700 couldnt find any info on for the 6 blinks, yea backlight code, but why? LEDs tested fine, power supply looked fine(at first) main board was sending voltages to turn on BL and dimming control. but service manual says main board or panel.... well before you go throwing money at it, check out fuse to ground PS6800(circled) and Q6814(circled) replaced these 2 components and good to go. hope i saved someone a headache

    applies to

    KDL-55EX711
    KDL-46EX701
    KDL-46NX700
    KDL-46NX800
    KDL-52EX700
    KDL-52EX701
    KDL-52NX800
    KDL-55EX710
    Attached Files

    #2
    Re: Sony KDL-52ex700 and others 6 blink possible fix

    Spot on Sir! you helped fix my 52ex700. thanks

    Comment


      #3
      Re: Sony KDL-52ex700 and others 6 blink possible fix

      thanks for such a great info. u made my day thanks...

      Comment


        #4
        Re: Sony KDL-52ex700 and others 6 blink possible fix

        YES Sir!!...The original post really is true....I got one but in my case the fuse to ground was the problem....I temporarily connected a normal 0.5A fuse and the backlights came on....the set worked for 10hrs straight and no problem...I closed up the set and could not figure out why the fuse alone went....Returned the set to owner...this was Dec 2016....just spoke to the owner and the set working still....Great post...

        Comment


          #5
          Re: Sony KDL-52ex700 and others 6 blink possible fix

          Fuse to ground? Learn something new everyday here.
          I assume no responsibility for any stupid suggestions I might post.

          Comment


            #6
            Re: Sony KDL-52ex700 and others 6 blink possible fix

            Originally posted by dskall View Post
            Fuse to ground? Learn something new everyday here.
            Yes...Fuse to ground....I found it strange too....

            Comment


              #7
              Re: Sony KDL-52ex700 and others 6 blink possible fix

              Originally posted by dhavalrpatil View Post
              thanks for such a great info. u made my day thanks...
              checked fuse to ground was open and Q6814 was shorted gate to source...placed 11n90 instead of k4096...and fuse shorted direct to ground...still 6 time blinking...

              Comment


                #8
                Re: Sony KDL-52ex700 and others 6 blink possible fix

                Gate-Drain-Source pins the same? What about current rating etc....I didn't compare the specs for both transistors.

                Comment


                  #9
                  Re: Sony KDL-52ex700 and others 6 blink possible fix

                  Originally posted by Andrew F. Ali View Post
                  Gate-Drain-Source pins the same? What about current rating etc....I didn't compare the specs for both transistors.
                  one 100ohms resistor on pin 6 of ic2904 was open due to gate to source shorting..replaced that and ..backlight came...but 2-3 led are also damaged in my case...need to replace them..

                  Comment


                    #10
                    Re: Sony KDL-52ex700 and others 6 blink possible fix

                    Great...You are well on your way to successfully repairing your TV....Good work.

                    Comment


                      #11
                      Re: Sony KDL-52ex700 and others 6 blink possible fix

                      Originally posted by dhavalrpatil View Post
                      one 100ohms resistor on pin 6 of ic2904 was open due to gate to source shorting..replaced that and ..backlight came...but 2-3 led are also damaged in my case...need to replace them..

                      Ic2904 not exist,

                      Comment


                        #12
                        Re: Sony KDL-52ex700 and others 6 blink possible fix

                        Originally posted by sacg View Post
                        Ic2904 not exist,
                        its ic number not print number

                        Comment


                          #13
                          Re: Sony KDL-52ex700 and others 6 blink possible fix

                          Thanks someone gave me a KDL-46EX701. A .5 A fuse did the trick .

                          Comment


                            #14
                            Re: Sony KDL-52ex700 and others 6 blink possible fix

                            Thanks!!! good job

                            Comment


                              #15
                              Re: Sony KDL-52ex700 and others 6 blink possible fix

                              Originally posted by dhavalrpatil View Post
                              one 100ohms resistor on pin 6 of ic2904 was open due to gate to source shorting..replaced that and ..backlight came...but 2-3 led are also damaged in my case...need to replace them..
                              How do you know the name of this leds to replace each? 6v or 3v for this leds? this leds have 6 pins and not have similar footprint

                              Comment


                                #16
                                Re: Sony KDL-52ex700 and others 6 blink possible fix

                                The led's on this tv are probably 3v unless it is edge lit
                                I assume no responsibility for any stupid suggestions I might post.

                                Comment


                                  #17
                                  Re: Sony KDL-52ex700 and others 6 blink possible fix

                                  Thank you sir!

                                  Comment


                                    #18
                                    Re: Sony KDL-52ex700 and others 6 blink possible fix

                                    IC 2904 it is IC6803 but pin 6 is not connected

                                    Comment


                                      #19
                                      Re: Sony KDL-52ex700 and others 6 blink possible fix

                                      Just replaced the fuse and now the TV works again!

                                      If i had followed the service manual - i would have replaced the BAL board and obviously this would not have fixed the problem

                                      Thank you so much for this guide - i like this SONY TV and i did not want it to go to landfill

                                      Many thanks again

                                      Comment

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