Sony KDL 52W3000

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  • shorteddiode
    Badcaps Veteran
    • Apr 2011
    • 221
    • USA
    #1

    Sony KDL 52W3000

    The standby light flashes 5 times when the TV is pluged in, and will continue to give the 5 flashes. Pushing the power button the green light comes on for about one minute then the set turns off , I have no sound and no picture or backlights. I checked the voltages and they all are correct except goint to the tcon board. I am supposed to be getting 12 volts to the tcon and when checked with the DVMM it bounced between 4 volts and .3 volts. The tcon connects to the FB1 board. The FB1 board is getting the proper 12 volt input voltage. My question is, The sercive manual says 5 flashes is either a bad tcon or bad screen. If I am not getting the needed 12 volts to the tcon wouldn't I be safe in thainking it is the FB1 board? I think the FB1 is also called the logic board. Every board except the tcon has the proper input voltage. I can provide a link to the service info if needed.
    Thanks Everyone
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Sony KDL 52W3000

      Possibly a shorted T-con - can you check if it gets good 12V with T-con unplugged.
      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

        • shorteddiode
          Badcaps Veteran
          • Apr 2011
          • 221
          • USA
          #3
          Re: Sony KDL 52W3000

          Should have mentioned, I unpluged the tcon from the FB1 board and I am not getting the 12 volts foe the tcon from the FB1 (logig) board. That's why I felt the logic board was at fault.
          Last edited by shorteddiode; 08-10-2012, 01:29 PM.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Sony KDL 52W3000

              That would make sense. Does it still only rise to 4V. It may be repairable - do you have schematics of the main board?
              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

                • shorteddiode
                  Badcaps Veteran
                  • Apr 2011
                  • 221
                  • USA
                  #5
                  Re: Sony KDL 52W3000

                  Yes go up to 4 volts then drops, then back up to 4 volts then drops. Continues to do that until the TV shuts down. Yes on the schematic

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Sony KDL 52W3000

                      Originally posted by shorteddiode
                      Yes go up to 4 volts then drops, then back up to 4 volts then drops. Continues to do that until the TV shuts down. Yes on the schematic
                      Can you attach the schematic?
                      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

                        • shorteddiode
                          Badcaps Veteran
                          • Apr 2011
                          • 221
                          • USA
                          #7
                          Re: Sony KDL 52W3000

                          Here ishttp://elektrotanya.com/sony_kdl-52w3000_fix2-

                          chassis.pdf/download.html the link for the service info

                            Comment

                            • shorteddiode
                              Badcaps Veteran
                              • Apr 2011
                              • 221
                              • USA
                              #8
                              Re: Sony KDL 52W3000

                              Well I replaced the FB1 board and now it's up and running, and 12 volts to the tcon.

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: Sony KDL 52W3000

                                  Great. Though sometimes with Sony it seems a board swap is the only way forward.
                                  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

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