Sony KLV32U300A starts up then shuts down

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  • Admirality
    Senior Member
    • May 2020
    • 80
    • South Africa

    #1

    Sony KLV32U300A starts up then shuts down

    Sony KLV32U300A starts up then shuts down with ared led blinking twice with a pause then again the same over,ould someone pls give advice on where to lookfor rhe error
  • dick_barton
    Badcaps Legend
    • Aug 2015
    • 6642
    • Wales

    #2
    Re: Sony KLV32U300A starts up then shuts down

    Are you certain it's KLV32U300A and not KLV-32V300A

    The led fault code for KLV-32V300A is attached
    Attached Files
    Willing to help but I'm no expert.

    Comment

    • Admirality
      Senior Member
      • May 2020
      • 80
      • South Africa

      #3
      Re: Sony KLV32U300A starts up then shuts down

      Thanks Dick,it is definitely klv32u300a

      Comment

      • Admirality
        Senior Member
        • May 2020
        • 80
        • South Africa

        #4
        Re: Sony KLV32U300A starts up then shuts down

        And thanks for your input,much appreciated

        Comment

        • dick_barton
          Badcaps Legend
          • Aug 2015
          • 6642
          • Wales

          #5
          Re: Sony KLV32U300A starts up then shuts down

          Can you post nice sharp photo's of the circuit boards
          Have you taken any voltage readings?
          Willing to help but I'm no expert.

          Comment

          • nomoresonys
            Badcaps Legend
            • Jan 2013
            • 12146
            • U.S.

            #6
            Re: Sony KLV32U300A starts up then shuts down

            Try test number 3 below, be sure to post the pin label/description, number and voltage.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Sony KLV32U300A starts up then shuts down

              Service manual.
              Attached Files
              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

              • Admirality
                Senior Member
                • May 2020
                • 80
                • South Africa

                #8
                Re: Sony KLV32U300A starts up then shuts down

                Hi Dick no i hav'nt checked the voltages yet and i will post pics of the circuit boards,yesterday i switche the tv on and it actually came on for 5 minutes and switched off automatically but after that the same on off occured again.what can you make of that

                Comment

                • Admirality
                  Senior Member
                  • May 2020
                  • 80
                  • South Africa

                  #9
                  Re: Sony KLV32U300A starts up then shuts down

                  Does it sound like the power supply or could it be on another board

                  Comment

                  • nomoresonys
                    Badcaps Legend
                    • Jan 2013
                    • 12146
                    • U.S.

                    #10
                    Re: Sony KLV32U300A starts up then shuts down

                    It's just speculation until you do the tests.

                    Comment

                    • Admirality
                      Senior Member
                      • May 2020
                      • 80
                      • South Africa

                      #11
                      Re: Sony KLV32U300A starts up then shuts down

                      Thanks nomoresonys

                      Comment

                      • Admirality
                        Senior Member
                        • May 2020
                        • 80
                        • South Africa

                        #12
                        Re: Sony KLV32U300A starts up then shuts down

                        Hi Dick,i checked voltages on standby and all seem ok but when i removed one plug from power supply going to the main board then green light stays on which indicates that the fault is on main board but the led flashes 2 times still which according to the chart of blinking codes should indicate that the psu is the culprit,how do i post pics of the boards on here

                        Comment

                        • dick_barton
                          Badcaps Legend
                          • Aug 2015
                          • 6642
                          • Wales

                          #13
                          Re: Sony KLV32U300A starts up then shuts down

                          Post pictures by clicking on "Go Advanced" and then I add them one at a time.
                          Willing to help but I'm no expert.

                          Comment

                          • Admirality
                            Senior Member
                            • May 2020
                            • 80
                            • South Africa

                            #14
                            Re: Sony KLV32U300A starts up then shuts down

                            Hi Dick i did go on advanced and added the attachments but how do i post them,when i add attachments on email i have no problem but on here i just dont seem to get it done

                            Comment

                            • dick_barton
                              Badcaps Legend
                              • Aug 2015
                              • 6642
                              • Wales

                              #15
                              Re: Sony KLV32U300A starts up then shuts down

                              RJ gives an explanation on how to add attachments

                              https://www.badcaps.net/forum/showpo...18&postcount=4
                              Willing to help but I'm no expert.

                              Comment

                              • Admirality
                                Senior Member
                                • May 2020
                                • 80
                                • South Africa

                                #16
                                Re: Sony KLV32U300A starts up then shuts down

                                Sorry it looks like i cant add attachments yet it states invalid post

                                Comment

                                • Admirality
                                  Senior Member
                                  • May 2020
                                  • 80
                                  • South Africa

                                  #17
                                  Re: Sony KLV32U300A starts up then shuts down



                                  Attached Files

                                  Comment

                                  • Admirality
                                    Senior Member
                                    • May 2020
                                    • 80
                                    • South Africa

                                    #18
                                    Re: Sony KLV32U300A starts up then shuts down

                                    Ok i finally managed to attach the psu and main board

                                    Comment

                                    • dick_barton
                                      Badcaps Legend
                                      • Aug 2015
                                      • 6642
                                      • Wales

                                      #19
                                      Re: Sony KLV32U300A starts up then shuts down

                                      Can you give the voltages read on CN201, CN202 & CN203
                                      eg
                                      CN201
                                      Pin 1 GND
                                      Pin 2 GND
                                      Pin 3 PWR_6V = xxV
                                      Pin 4 PWR_6V = xxV
                                      Pin 5 GND
                                      etc for all pins
                                      Willing to help but I'm no expert.

                                      Comment

                                      • Admirality
                                        Senior Member
                                        • May 2020
                                        • 80
                                        • South Africa

                                        #20
                                        Re: Sony KLV32U300A starts up then shuts down

                                        CN201 Pin 1=GND 2=GND 3=5.63V 4=5.83V 5=GND 6=GND 7=5V 8=5V 9=GND 10=GND 11=14.60V 12=14.60V 13=GND 14=32V

                                        CN202 Pin 1=0.2V 2=0V 3=4.1V 4=GND 5=GND 6=GND 7=4.1V 8=4.1V

                                        CN203 Pins 1-5=0V And 6-10=24V

                                        Comment

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