Technika lcd32-207

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  • sordids999
    Badcaps Legend
    • May 2013
    • 2149
    • uk
    #1

    Technika lcd32-207

    Hi guys

    got this tv it will be ok for about 40 minutes then will shut itself off

    upon testing the voltages all are low

    main cap is 335 volts
    also cant see any caps swollen

    24 volts are 22.5 volts
    5 volts are 3.7 volts
    and so on PSU is 17PW20.1
    Attached Files
    Tags: None
    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: Technika lcd32-207

      Originally posted by sordids999
      Hi guys

      got this tv it will be ok for about 40 minutes then will shut itself off

      upon testing the voltages all are low

      main cap is 335 volts
      also cant see any caps swollen

      24 volts are 22.5 volts
      5 volts are 3.7 volts
      and so on PSU is 17PW20.1
      Sounds like the pfc isnt working and is causing voltage drop, I have a tonne of vestel 17pw20 power boards if you would like me to send you one as its easier just to replace it.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain
          #3
          Re: Technika lcd32-207

          The reason why its shutting is because the motherboard or inverter is detecting voltage drop and is triggering the psu to shutdown, Im all but sure that the psu is at fault.
          Last edited by ReeceyBurger123; 11-07-2014, 04:43 PM.
          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

          https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Technika lcd32-207

              If the cap voltage stays at 335V when the set is running the PFC circuit is bad, this will cause the set to fail to turn on sometimes or intermittently turn off while running. Replacing or repairing the PSU would fix this.
              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

                • sordids999
                  Badcaps Legend
                  • May 2013
                  • 2149
                  • uk
                  #5
                  Re: Technika lcd32-207

                  thanks guys

                    Comment

                    • ReeceyBurger123
                      Never Give Up !
                      • May 2014
                      • 7325
                      • Britain
                      #6
                      Re: Technika lcd32-207

                      Originally posted by sordids999
                      thanks guys
                      Your welcome, are you going to replace it or repair it ?
                      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                      https://www.facebook.com/Telford-Tel...7894576335359/

                        Comment

                        • sordids999
                          Badcaps Legend
                          • May 2013
                          • 2149
                          • uk
                          #7
                          Re: Technika lcd32-207

                          I have a spare so ill replace thanks

                            Comment

                            • Alastair E
                              Chief Womble
                              • Mar 2013
                              • 1963
                              • U.K.
                              #8
                              Re: Technika lcd32-207

                              IF you look at the underside of the PSU, There's three resistors in a diagonal 'row'

                              These go dry-jointed making the sets intermittent shut-down.
                              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

                                • sordids999
                                  Badcaps Legend
                                  • May 2013
                                  • 2149
                                  • uk
                                  #9
                                  Re: Technika lcd32-207

                                  thanks alastair ill look

                                    Comment

                                    • ReeceyBurger123
                                      Never Give Up !
                                      • May 2014
                                      • 7325
                                      • Britain
                                      #10
                                      Re: Technika lcd32-207

                                      Did you get the set working in the end ?
                                      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                      https://www.facebook.com/Telford-Tel...7894576335359/

                                        Comment

                                        • sordids999
                                          Badcaps Legend
                                          • May 2013
                                          • 2149
                                          • uk
                                          #11
                                          Re: Technika lcd32-207

                                          yes m8 sorry meant to update the thread i replaced the psu

                                            Comment

                                            • ReeceyBurger123
                                              Never Give Up !
                                              • May 2014
                                              • 7325
                                              • Britain
                                              #12
                                              Re: Technika lcd32-207

                                              Originally posted by sordids999
                                              yes m8 sorry meant to update the thread i replaced the psu
                                              Ok is the set working fine and is the pfc on that psu running now ?
                                              Last edited by ReeceyBurger123; 11-14-2014, 02:08 PM.
                                              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                                              https://www.facebook.com/Telford-Tel...7894576335359/

                                                Comment

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