technika 42-2030

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  • sordids999
    Badcaps Legend
    • May 2013
    • 2149
    • uk

    #1

    technika 42-2030

    got this tv stuck in standby checked psu voltages very low on further testing unplugged the lvds cable from main board tv backlight comes on,so tested fuse on tcon seems ok so looking for help here pls

    thanks
    Attached Files
  • flocko
    Badcaps Legend
    • Nov 2012
    • 1121
    • uk

    #2
    Re: technika 42-2030

    Would think if this has the T.MSD3067.68A main board it has a bad eeprom, But could be Wrong, do not try to reset this as it will not work and could do more damage, if the main is of that above the eeprom is the one at U10 Flocko

    Comment

    • sordids999
      Badcaps Legend
      • May 2013
      • 2149
      • uk

      #3
      Re: technika 42-2030

      ok i now have backlight after removing tcon to check fuse but now have a orange standby light but still no picture ive attached the voltages im getting
      thanks for the reply flocko the main board is 17MB38-1 290110

      thanks
      Attached Files

      Comment

      • sordids999
        Badcaps Legend
        • May 2013
        • 2149
        • uk

        #4
        Re: technika 42-2030

        ok upon reseating the lvds cable i know have backlight and a picture but when i turn it off via the buttons on the side it turns off but i now have a orange and blue flashing standby lights and you cant turn the tv back on unless you unplug the tv

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #5
          Re: technika 42-2030

          Check each end of the T-con fuse to ground for shorts.
          Use the 2000 ohm range, power to the TV 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

          • sordids999
            Badcaps Legend
            • May 2013
            • 2149
            • uk

            #6
            Re: technika 42-2030

            im not sure if i have 2000ohms on my meter ?
            Attached Files
            Last edited by sordids999; 04-29-2014, 05:28 AM.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: technika 42-2030

              What range do you use to test fuses with power off? Use that.
              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

                #8
                Re: technika 42-2030

                i used the 200 ohm range to test the fuse unless i done this wrong
                Attached Files

                Comment

                • sordids999
                  Badcaps Legend
                  • May 2013
                  • 2149
                  • uk

                  #9
                  Re: technika 42-2030

                  if im testing it right then when i check for shorts im getting no reading

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #10
                    Re: technika 42-2030

                    OK, looks like on yours it is marked 2K, so use that.
                    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

                      #11
                      Re: technika 42-2030

                      the tv backlight will not come on until disconnect the lvds cable from the tcon then all is fine

                      Comment

                      • sordids999
                        Badcaps Legend
                        • May 2013
                        • 2149
                        • uk

                        #12
                        Re: technika 42-2030

                        @tom the tcon is LC420WUN-SCA1 6870C-0310C i have a spare but its LC420WUN-SCA1 6870C-0310A would it be ok to test ?

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #13
                          Re: technika 42-2030

                          We need to see if your panel is shorting the T-con out, so a few more tests first. Should panel be OK it should be OK if all connectors are the same.
                          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

                            #14
                            Re: technika 42-2030

                            Ok mate so what's next

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #15
                              Re: technika 42-2030

                              Use the 2Kohm range. Put the black probe on the case. Red probe each end of fuse. What readings do you see? (Allow meter to settle for 10 seconds.)
                              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

                                #16
                                Re: technika 42-2030

                                im getting no reading tom just reads 1. and thats using the 2Kohm

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #17
                                  Re: technika 42-2030

                                  OK, can you try powering the set on with the T-con disconnected, but the top panel ribbons removed?

                                  If it powers on - you may have a shorted panel - your choice to put in a new T-con as it may be damaged.
                                  If it does not power on as before the T-con is likely the only fault.
                                  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

                                    #18
                                    Re: technika 42-2030

                                    ok tcon disconnected and panel ribbons removed from the T-con and yes it turned on

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #19
                                      Re: technika 42-2030

                                      Hmm :/ I think that may be a bad panel there. You can try with only one ribbon at a time if it has two.
                                      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

                                        #20
                                        Re: technika 42-2030

                                        ok tried each ribbon still the same but now with both ribbon cables disconnected all im getting is a orange and blue standy lights flashing

                                        Comment

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