Bush LCD37TV016HD

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  • LEEDASH
    Badcaps Veteran
    • Dec 2012
    • 481
    • Bedfordshire

    #81
    Re: Bush LCD37TV016HD

    Pin 1,2 and 4 nothing MULTIMETER dont even move.
    Last edited by LEEDASH; 03-13-2013, 09:38 AM.

    Comment

    • Radio Fox
      Badcaps Veteran
      • Jan 2010
      • 281
      • UK

      #82
      Re: Bush LCD37TV016HD

      Just thought that it may have a surge protection (inrush current) thermister in line, but even so, it should show some reading on the meter's 200 Ohm range.

      Can you just double check once more that pin 2 of the rectifier doesn't read anything when the other probe is connected to either the Live or Neutral of the mains plug. As before, if the TV has a mains switch, make sure it is in the ON position.
      ________________________________________________

      Invisible airwaves crackle with life
      Bright antennae bristle with the energy
      ________________________________________________

      Comment

      • LEEDASH
        Badcaps Veteran
        • Dec 2012
        • 481
        • Bedfordshire

        #83
        Re: Bush LCD37TV016HD

        Yes double checked all still the same only pin 3 showin any sign of life.

        Comment

        • Radio Fox
          Badcaps Veteran
          • Jan 2010
          • 281
          • UK

          #84
          Re: Bush LCD37TV016HD

          Hmmm...that doesn't seem right.

          On the attached photo I have put red & blue numbers. With your meter on the 200 Ohm range place the probes between blue 1 - 2, then 2 - 3, then 3 - 4, then 4 - 5. There should be almost zero Ohms between each.

          Do the same for the red numbers.
          Attached Files
          ________________________________________________

          Invisible airwaves crackle with life
          Bright antennae bristle with the energy
          ________________________________________________

          Comment

          • LEEDASH
            Badcaps Veteran
            • Dec 2012
            • 481
            • Bedfordshire

            #85
            Re: Bush LCD37TV016HD

            blue 1+2 00.4
            2+3 00.5
            3+4 00.8
            4+5 00.5

            red 1+2 00.4
            2+3 00.5
            3+4 00.4

            Comment

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #86
              Re: Bush LCD37TV016HD

              Check the solder on Pin1 (Blue) I suspect the connector is not soldered correctly.
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • LEEDASH
                Badcaps Veteran
                • Dec 2012
                • 481
                • Bedfordshire

                #87
                Re: Bush LCD37TV016HD

                Seems ok pin 1

                Comment

                • Radio Fox
                  Badcaps Veteran
                  • Jan 2010
                  • 281
                  • UK

                  #88
                  Re: Bush LCD37TV016HD

                  So the open circuit is not on the actual PSU board (assuming there are no intermittent dry joints).

                  Does the mains lead go to another board before going to the PSU board? Is there a mains ON/OFF switch on the TV?

                  I know you have said that you have tried different mains leads, but could you test the fuse in the one you are using at the moment with your meter.

                  If you could attach a photo of the route that the mains lead takes, between the kettle socket and the input to the PSU board, that would help.
                  ________________________________________________

                  Invisible airwaves crackle with life
                  Bright antennae bristle with the energy
                  ________________________________________________

                  Comment

                  • LEEDASH
                    Badcaps Veteran
                    • Dec 2012
                    • 481
                    • Bedfordshire

                    #89
                    Re: Bush LCD37TV016HD





                    Ok the kettle lead socket lead (blue and brown) runs under (pic 2) then straight in to pic 1 ( the psu )

                    what shall i test the fuse on ?
                    Attached Files

                    Comment

                    • LEEDASH
                      Badcaps Veteran
                      • Dec 2012
                      • 481
                      • Bedfordshire

                      #90
                      Re: Bush LCD37TV016HD

                      no does not go to another board before the psu

                      Comment

                      • LEEDASH
                        Badcaps Veteran
                        • Dec 2012
                        • 481
                        • Bedfordshire

                        #91
                        Re: Bush LCD37TV016HD

                        00.5 testing on 200 ohms have tried lead in other tv and ok.

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #92
                          Re: Bush LCD37TV016HD

                          Radio Fox prbably wants to see the socket where the kettle lead plugs into, that is, the other end of the blue and brown cable.
                          Well I Do
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • selldoor
                            Slow Learner
                            • Dec 2010
                            • 7870

                            #93
                            Re: Bush LCD37TV016HD

                            Does the brown and blue connector unplug from the power supply board.
                            Check there are two pins in there
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                            • LEEDASH
                              Badcaps Veteran
                              • Dec 2012
                              • 481
                              • Bedfordshire

                              #94
                              Re: Bush LCD37TV016HD

                              Yes you have the on/off switch next to it the glass fuse then the 3pin where the kettle lead goes into,yes there is a 2 pin on the pcb

                              Comment

                              • Radio Fox
                                Badcaps Veteran
                                • Jan 2010
                                • 281
                                • UK

                                #95
                                Re: Bush LCD37TV016HD

                                Originally posted by LEEDASH
                                Yes you have the on/off switch next to it the glass fuse then the 3pin where the kettle lead goes into,yes there is a 2 pin on the pcb
                                I'm getting a bit confused now. Are you saying that there is another fuse before the mains supply reaches the PSU board?

                                We are trying to determine the path that the mains wiring takes from the kettle socket to the PSU board. If there is another fuse in the circuit that you haven't tested, put your meter across that.

                                Also it could possibly be a broken mains switch. If you can get to the contacts on the switch (they may be covered in heat shrink) then check that out with your meter. It should show nearly zero Ohms in one switch position & open circuit in the other.

                                As selldoor said, if it's possible, a photo of the path that the mains wiring takes from the kettle connector to the PSU board would be helpfull.
                                ________________________________________________

                                Invisible airwaves crackle with life
                                Bright antennae bristle with the energy
                                ________________________________________________

                                Comment

                                • LEEDASH
                                  Badcaps Veteran
                                  • Dec 2012
                                  • 481
                                  • Bedfordshire

                                  #96
                                  Re: Bush LCD37TV016HD

                                  we have obviously the plug fuse,that seems ok
                                  we have a 250v glass fuse next to where the kettle lead goes into,that is also ok,having changed this.
                                  i did post a picture couple above this
                                  Right how shall i test this on off switch at the back ? unit on or off or off in the on position ?

                                  Comment

                                  • selldoor
                                    Slow Learner
                                    • Dec 2010
                                    • 7870

                                    #97
                                    Re: Bush LCD37TV016HD

                                    It depends on whether you can see any contacts on the switch- I suggest you use ohms
                                    200 and NO POWER. What I have in mind is to get a piece of wire or a paper clip - something to connect the positive and negative pins on the mains plug.
                                    Un plug the blue and brown socket at the power supply and connect your meter across the two pins then operate the on off switch.
                                    Attached Files
                                    Last edited by selldoor; 03-14-2013, 04:26 PM. Reason: Add pic
                                    Please upload pictures using attachment function when ask for help on the repair
                                    http://www.badcaps.net/forum/showthread.php?t=39740

                                    Comment

                                    • LEEDASH
                                      Badcaps Veteran
                                      • Dec 2012
                                      • 481
                                      • Bedfordshire

                                      #98
                                      Re: Bush LCD37TV016HD

                                      Just disconnected the blue/brown form pcb,attached my multimeter to the wire/block,switched on/off and nothing dont even move.

                                      Comment

                                      • LEEDASH
                                        Badcaps Veteran
                                        • Dec 2012
                                        • 481
                                        • Bedfordshire

                                        #99
                                        Re: Bush LCD37TV016HD

                                        do you think its worth changing the rocker switch ?

                                        Comment

                                        • selldoor
                                          Slow Learner
                                          • Dec 2010
                                          • 7870

                                          #100
                                          Re: Bush LCD37TV016HD

                                          You need to have the kettlelead plugged into the kettle conector - but not into the mains AND short/wire across the mains plug as in the diagram, to complete the circuit.
                                          Please upload pictures using attachment function when ask for help on the repair
                                          http://www.badcaps.net/forum/showthread.php?t=39740

                                          Comment

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