usp440m-42lp psu

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  • paulstef
    Badcaps Veteran
    • Dec 2013
    • 724
    • Canada

    #41
    Re: usp440m-42lp psu

    Perfect. What's the voltage at the points indicated in the picture?
    Attached Files

    Comment

    • joehezzer
      Badcaps Veteran
      • Jul 2012
      • 251
      • England

      #42
      Re: usp440m-42lp psu

      Originally posted by paulstef
      Perfect. What's the voltage at the points indicated in the picture?
      Bouncing around 00.3 to 00.7 that looks a bit suss

      Comment

      • paulstef
        Badcaps Veteran
        • Dec 2013
        • 724
        • Canada

        #43
        Re: usp440m-42lp psu

        ????

        Are you sure the fuse is ok?

        You measure AC, right?

        Comment

        • joehezzer
          Badcaps Veteran
          • Jul 2012
          • 251
          • England

          #44
          Re: usp440m-42lp psu

          i did a continuity test on it, i took the fuse out of its holder

          Comment

          • paulstef
            Badcaps Veteran
            • Dec 2013
            • 724
            • Canada

            #45
            Re: usp440m-42lp psu

            Check input voltage directly at the connector. Sure it's there?

            Comment

            • joehezzer
              Badcaps Veteran
              • Jul 2012
              • 251
              • England

              #46
              Re: usp440m-42lp psu

              Nothing. Extension lead is fine

              Comment

              • paulstef
                Badcaps Veteran
                • Dec 2013
                • 724
                • Canada

                #47
                Re: usp440m-42lp psu

                Well, then the problem is somewhere else. I don't have the TV in front of me, just the board. Check the connector/cable etc.

                Comment

                • paulstef
                  Badcaps Veteran
                  • Dec 2013
                  • 724
                  • Canada

                  #48
                  Re: usp440m-42lp psu

                  That's very strange. Is your multimeter working? What if you measure the AC directly at the wall outlet?

                  Comment

                  • joehezzer
                    Badcaps Veteran
                    • Jul 2012
                    • 251
                    • England

                    #49
                    Re: usp440m-42lp psu

                    Originally posted by paulstef
                    That's very strange. Is your multimeter working? What if you measure the AC directly at the wall outlet?
                    well the extension lead is working as i have just tried my belt sander on it. just going to have a look at a faulty rocker switch and the bit where the kettle lead goes in

                    Comment

                    • paulstef
                      Badcaps Veteran
                      • Dec 2013
                      • 724
                      • Canada

                      #50
                      Re: usp440m-42lp psu

                      There is also an EMI filter directly connected to the AC inlet of the TV. Maybe it's faulty. You could measure the output voltage at its terminals.
                      Attached Files

                      Comment

                      • joehezzer
                        Badcaps Veteran
                        • Jul 2012
                        • 251
                        • England

                        #51
                        Re: usp440m-42lp psu

                        Originally posted by paulstef
                        There is also an EMI filter directly connected to the AC inlet of the TV. Maybe it's faulty. You could measure the output voltage at its terminals.
                        yeah just looking at that now

                        Comment

                        • joehezzer
                          Badcaps Veteran
                          • Jul 2012
                          • 251
                          • England

                          #52
                          Re: usp440m-42lp psu

                          gonna have to give it a break tonite, will go over these bits tomorrow.

                          Comment

                          • paulstef
                            Badcaps Veteran
                            • Dec 2013
                            • 724
                            • Canada

                            #53
                            Re: usp440m-42lp psu

                            ok. good luck. Shouldn't be hard.

                            Comment

                            • joehezzer
                              Badcaps Veteran
                              • Jul 2012
                              • 251
                              • England

                              #54
                              Re: usp440m-42lp psu

                              Originally posted by paulstef
                              There is also an EMI filter directly connected to the AC inlet of the TV. Maybe it's faulty. You could measure the output voltage at its terminals.
                              i have not tested it yet but it does smell a little

                              Comment

                              • paulstef
                                Badcaps Veteran
                                • Dec 2013
                                • 724
                                • Canada

                                #55
                                Re: usp440m-42lp psu

                                Ok, keep us posted about your findings. There is not much left to check.

                                In the meantime I will spend another evening on my board

                                Comment

                                • joehezzer
                                  Badcaps Veteran
                                  • Jul 2012
                                  • 251
                                  • England

                                  #56
                                  Re: usp440m-42lp psu

                                  Originally posted by paulstef
                                  Ok, keep us posted about your findings. There is not much left to check.

                                  In the meantime I will spend another evening on my board


                                  will do

                                  Comment

                                  • paulstef
                                    Badcaps Veteran
                                    • Dec 2013
                                    • 724
                                    • Canada

                                    #57
                                    Re: usp440m-42lp psu

                                    How did this work out for you? Was it the Filter?

                                    Comment

                                    • joehezzer
                                      Badcaps Veteran
                                      • Jul 2012
                                      • 251
                                      • England

                                      #58
                                      Re: usp440m-42lp psu

                                      Originally posted by paulstef
                                      How did this work out for you? Was it the Filter?
                                      hi paul not had chance to test it yet, hopefully tomorrow

                                      Comment

                                      • joehezzer
                                        Badcaps Veteran
                                        • Jul 2012
                                        • 251
                                        • England

                                        #59
                                        Re: usp440m-42lp psu

                                        Originally posted by paulstef
                                        How did this work out for you? Was it the Filter?
                                        ok so i just tested the filter there is no voltage at all at the filter, so have a new filter on order.

                                        Comment

                                        • paulstef
                                          Badcaps Veteran
                                          • Dec 2013
                                          • 724
                                          • Canada

                                          #60
                                          Re: usp440m-42lp psu

                                          Great. Good luck!

                                          Comment

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