Baird JO37BAIRD(A) No Power

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #41
    Re: Baird JO37BAIRD(A) No Power

    L4 isn't a diode, unfortunately. Can we see pictures of the underside of PSU (green side)
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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    • Mikeyboy2007
      Badcaps Veteran
      • Mar 2013
      • 745
      • Scotland

      #42
      Re: Baird JO37BAIRD(A) No Power

      hope these pictures help
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #43
        Re: Baird JO37BAIRD(A) No Power

        Can you read the part #s off these ICs?
        Attached Files
        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.

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        • Mikeyboy2007
          Badcaps Veteran
          • Mar 2013
          • 745
          • Scotland

          #44
          Re: Baird JO37BAIRD(A) No Power

          just aswell ive got magnifier lol 1st circled is KFP then has something very very small beside those enitials then second is 16068 PBUS OR FBUS cant realy make it out

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #45
            Re: Baird JO37BAIRD(A) No Power

            Can't find data on either of those. Are you sure of those markings?
            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.

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            • Mikeyboy2007
              Badcaps Veteran
              • Mar 2013
              • 745
              • Scotland

              #46
              Re: Baird JO37BAIRD(A) No Power

              1st one could possible be VFP ?

              nope deffo starts KFP
              Last edited by Mikeyboy2007; 03-11-2013, 05:08 PM.

              Comment

              • Mikeyboy2007
                Badcaps Veteran
                • Mar 2013
                • 745
                • Scotland

                #47
                Re: Baird JO37BAIRD(A) No Power

                1606B PBUS and and the KFP one is too small to make out whats beside those enitials

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #48
                  Re: Baird JO37BAIRD(A) No Power

                  One is probably http://www.onsemi.com/PowerSolutions....do?id=NCP1606.
                  The other we will have to reverse engineer.

                  Can I get a closer shot of this area, preferably in several pictures?
                  Attached Files
                  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.

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                  • Mikeyboy2007
                    Badcaps Veteran
                    • Mar 2013
                    • 745
                    • Scotland

                    #49
                    Re: Baird JO37BAIRD(A) No Power

                    hope these are clear enough
                    Attached Files

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK

                      #50
                      Re: Baird JO37BAIRD(A) No Power

                      Test these devices. To test:
                      - Meter on diode test
                      - Middle pin red, black probe on one outer pin, note reading
                      - Middle pin red, black probe on other outer pin, note reading
                      - Middle pin black, red probe on one outer pin, note reading
                      - Middle pin black, red probe on other outer pin, note reading

                      Power must be OFF.
                      Attached Files
                      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

                        #51
                        Re: Baird JO37BAIRD(A) No Power

                        as followed in that order

                        1
                        1
                        277
                        163

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #52
                          Re: Baird JO37BAIRD(A) No Power

                          Did you do both?
                          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

                            #53
                            Re: Baird JO37BAIRD(A) No Power

                            yeah sorry should have been

                            1
                            1
                            277
                            277

                            1
                            1
                            162
                            163

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #54
                              Re: Baird JO37BAIRD(A) No Power

                              Both diodes appear OK.
                              Looking on the top of the board there are capacitors EC3 and EC4.
                              Are their leads exposed allowing measurement across them while in circuit?
                              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

                                #55
                                Re: Baird JO37BAIRD(A) No Power

                                yeah, would i have to plug power board back into tv to measure that

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #56
                                  Re: Baird JO37BAIRD(A) No Power

                                  Just asking if you can manage it before I ask you to do it.
                                  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

                                    #57
                                    Re: Baird JO37BAIRD(A) No Power

                                    yeah the leads are exposed

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #58
                                      Re: Baird JO37BAIRD(A) No Power

                                      So, can you measure across them while the TV is powering up? Here is where we really need to get that part# on the 6-pin chip -- without it, we don't know what voltage is required, although it's usually >7V.
                                      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

                                        #59
                                        Re: Baird JO37BAIRD(A) No Power

                                        im trying to make it out mate and it looks like KFP 7V then another 2 letters or numbers

                                        Comment

                                        • Mikeyboy2007
                                          Badcaps Veteran
                                          • Mar 2013
                                          • 745
                                          • Scotland

                                          #60
                                          Re: Baird JO37BAIRD(A) No Power

                                          it looks like KFP 37V 51

                                          Comment

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