Baird JO37BAIRD(A) No Power

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  • Mikeyboy2007
    Badcaps Veteran
    • Mar 2013
    • 745
    • Scotland

    #21
    Re: Baird JO37BAIRD(A) No Power

    Originally posted by Mikeyboy2007
    circled the pin mate, thanks

    sorry its actualy the one to the right hand side of the one circled

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #22
      Re: Baird JO37BAIRD(A) No Power

      Right, so 5VSB measures 1.7V. This is the fault. What does it measure with the main board installed and with it removed?
      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

      • Mikeyboy2007
        Badcaps Veteran
        • Mar 2013
        • 745
        • Scotland

        #23
        Re: Baird JO37BAIRD(A) No Power

        its registering 1.6V-1.8V with main board disconnected and -00.0V with mainboard plugged in, is that possible or am i doing something wrong do you think ?

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #24
          Re: Baird JO37BAIRD(A) No Power

          Make sure you're touching the metal shroud around the pin.
          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

          • Mikeyboy2007
            Badcaps Veteran
            • Mar 2013
            • 745
            • Scotland

            #25
            Re: Baird JO37BAIRD(A) No Power

            yeah mate Main board plugged in its reporting 1.8V and unplugged its returning 0V ??

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #26
              Re: Baird JO37BAIRD(A) No Power

              Do you have any video inputs connected to the unit at present?
              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

              • Mikeyboy2007
                Badcaps Veteran
                • Mar 2013
                • 745
                • Scotland

                #27
                Re: Baird JO37BAIRD(A) No Power

                no mate nothing whatsoever the cable that connects to the pins is disconnected, should that be connected, if it is im gonna feel so dumb

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #28
                  Re: Baird JO37BAIRD(A) No Power

                  It should be connected while making measurements except when indicated otherwise.
                  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

                  • Mikeyboy2007
                    Badcaps Veteran
                    • Mar 2013
                    • 745
                    • Scotland

                    #29
                    Re: Baird JO37BAIRD(A) No Power

                    how can i measure the voltage on the pins with the cable connected ? but useless i know but thanks alot with the help

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK

                      #30
                      Re: Baird JO37BAIRD(A) No Power

                      There's a small bit of metal around where the pin goes into the connector, that's where to measure.
                      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

                      • Mikeyboy2007
                        Badcaps Veteran
                        • Mar 2013
                        • 745
                        • Scotland

                        #31
                        Re: Baird JO37BAIRD(A) No Power

                        ok so i stuck the red probe in at the top of where the pin meets the cable and it is returning 1.4-1.7V with the mainboard connected and with the mainboard disconnected its returning the same voltage

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #32
                          Re: Baird JO37BAIRD(A) No Power

                          Is it stable or bouncing?
                          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

                          • Mikeyboy2007
                            Badcaps Veteran
                            • Mar 2013
                            • 745
                            • Scotland

                            #33
                            Re: Baird JO37BAIRD(A) No Power

                            its just bouncing between 1.4 - 1.8 volts

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #34
                              Re: Baird JO37BAIRD(A) No Power

                              In which case, I am struggling to see how the user heard of a "pop" from the TV.
                              Seems like an ordinary start up cap fail or shorted diode.

                              Remove the power board and test all diodes for shorts. Do you need help with 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

                              • Mikeyboy2007
                                Badcaps Veteran
                                • Mar 2013
                                • 745
                                • Scotland

                                #35
                                Re: Baird JO37BAIRD(A) No Power

                                yeah mate im new with the multimeter and the testing of things, sorry to be a bother

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #36
                                  Re: Baird JO37BAIRD(A) No Power

                                  This is a diode:
                                  http://www.google.co.uk/imgres?imgur...9QEwAg&dur=576

                                  Remove power board from TV.
                                  Locate any components that look like as above.
                                  Test in both directions: you should get a reading in one direction, and a "1" in the other direction.
                                  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

                                  • Mikeyboy2007
                                    Badcaps Veteran
                                    • Mar 2013
                                    • 745
                                    • Scotland

                                    #37
                                    Re: Baird JO37BAIRD(A) No Power

                                    ok mate will get ack to you soon

                                    Comment

                                    • Mikeyboy2007
                                      Badcaps Veteran
                                      • Mar 2013
                                      • 745
                                      • Scotland

                                      #38
                                      Re: Baird JO37BAIRD(A) No Power

                                      Originally posted by tom66
                                      This is a diode:
                                      http://www.google.co.uk/imgres?imgur...9QEwAg&dur=576

                                      Remove power board from TV.
                                      Locate any components that look like as above.
                                      Test in both directions: you should get a reading in one direction, and a "1" in the other direction.
                                      what should i have multimeter set to ?

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: Baird JO37BAIRD(A) No Power

                                        Diode test mode. Looks like the symbol under the device I linked to.
                                        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

                                        • Mikeyboy2007
                                          Badcaps Veteran
                                          • Mar 2013
                                          • 745
                                          • Scotland

                                          #40
                                          Re: Baird JO37BAIRD(A) No Power

                                          ok readings from them are 281, 568, 567, 631, 590, one was reporting back 0 no matter which way i put the probes. had to do it from the underneath of the board as i couldnt get into any of them on top.. have a picture to show which one was reporting back as 0 both ways
                                          Attached Files

                                          Comment

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