Samsung s42ax-xb01

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  • martyparish
    Badcaps Veteran
    • Dec 2012
    • 313
    • United States

    #21
    Re: Samsung s42ax-xb01

    DMM = Digital Multimeter

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    • Mako
      Member
      • Jan 2013
      • 37
      • United States

      #22
      Re: Samsung s42ax-xb01

      ok. im gonna walk to my neighbors and see if i cant get one.

      Comment

      • Mako
        Member
        • Jan 2013
        • 37
        • United States

        #23
        Re: Samsung s42ax-xb01

        my friend is letting me borrow one, im picking it up and will be back on here in about an hour.

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #24
          Re: Samsung s42ax-xb01

          OK, I am here... Sorry, was busy.
          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

          • Mako
            Member
            • Jan 2013
            • 37
            • United States

            #25
            Re: Samsung s42ax-xb01

            no problem, it seems it might be a little later getting it than i originally thought. im heading over thee now, hopefully be back in 30 minutes to one hour. if you think you wont be on by then, can you list what i should test please? maybe even do so anyway so i can start right away when i return home.

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            • Mako
              Member
              • Jan 2013
              • 37
              • United States

              #26
              Re: Samsung s42ax-xb01

              ok im back, with the multi meter. what now?

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #27
                Re: Samsung s42ax-xb01

                OK, I need you to check the Vs voltage on the Y-Main connector.
                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

                • Mako
                  Member
                  • Jan 2013
                  • 37
                  • United States

                  #28
                  Re: Samsung s42ax-xb01

                  can you give me a quick way to know how to do this? i dont just wanna start sticking probes wherever.

                  Comment

                  • Mako
                    Member
                    • Jan 2013
                    • 37
                    • United States

                    #29
                    Re: Samsung s42ax-xb01

                    tso far what i can find is saying to put the black probe into a mounting hole, and the red probe onto one of those little nodes. is this correct? or do i need to use the empty slots in one of the plugs going from the psu to the y board?

                    Comment

                    • Mako
                      Member
                      • Jan 2013
                      • 37
                      • United States

                      #30
                      Re: Samsung s42ax-xb01

                      if i did it correctly, which was by putting black into a screw hole, and red onto a node, i got 1.4 v's for the couple seconds it was on.

                      Comment

                      • Mako
                        Member
                        • Jan 2013
                        • 37
                        • United States

                        #31
                        Re: Samsung s42ax-xb01

                        after researching more, that didnt seem right, and on the board written was 1 2 vs 1 2, and that made me think the top 2 plugs in the connector were for vs, and since one of the cords was black i put the black one in there, and the red one in the slot beneath it, then plugged it in, getting very small reading for the second or 2 its on, of .1-.2 volts.
                        Attached Files

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #32
                          Re: Samsung s42ax-xb01

                          Sorry I'm super busy at the moment, but I think you did it right. Vs is definitely dead. You should measure close to 170V on this older Samsung design (newer Samsung use 200V or so.) Now try without both Y-Main and X-Main connected.
                          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

                          • Mako
                            Member
                            • Jan 2013
                            • 37
                            • United States

                            #33
                            Re: Samsung s42ax-xb01

                            what do you mean, put the probes into dangling cords?

                            Comment

                            • Mako
                              Member
                              • Jan 2013
                              • 37
                              • United States

                              #34
                              Re: Samsung s42ax-xb01

                              also, strangely, i randomly pressed a few butons on the front while only X was connected, and it beeped when i pressed them, which had neve happened before.

                              Comment

                              • tom66
                                EVs Rule
                                • Apr 2011
                                • 32560
                                • UK

                                #35
                                Re: Samsung s42ax-xb01

                                Is there a free-standing post marked "Vs" on the power supply?
                                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

                                • Mako
                                  Member
                                  • Jan 2013
                                  • 37
                                  • United States

                                  #36
                                  Re: Samsung s42ax-xb01

                                  you mean on the board? and the psu board is the one right in the middle right? and what do you mean by post?

                                  Comment

                                  • Mako
                                    Member
                                    • Jan 2013
                                    • 37
                                    • United States

                                    #37
                                    Re: Samsung s42ax-xb01

                                    Vscan node, and Vs-adj square with an x with it is all i can find like that, beside little Vs' written next to cords

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #38
                                      Re: Samsung s42ax-xb01

                                      PSU board is middle, yes. It connects to main power input.

                                      OK, you will have to be careful, probe it directly on the power supply pin, do not short it out to anything.
                                      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

                                      • Mako
                                        Member
                                        • Jan 2013
                                        • 37
                                        • United States

                                        #39
                                        Re: Samsung s42ax-xb01

                                        ok i found a little node labeled Vs, sticking like a mm or less out of the board, is that what you meant?

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK

                                          #40
                                          Re: Samsung s42ax-xb01

                                          Can I have a picture?
                                          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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