Samsung PN58B860 Plasma suddenly shutdown and will not restart

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

    OK, so it seems to me like the problem is with the left hand board. Do you want to try repairing it, or just replace 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

    • Bobby78
      Member
      • Sep 2014
      • 47
      • United States

      #22
      Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

      Definitely want to repair if possible!

      Comment

      • Bobby78
        Member
        • Sep 2014
        • 47
        • United States

        #23
        Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

        No fun just replacing a board. Haha

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #24
          Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

          Can you try reading off the BN44-######A number printed on the board. For example BN44-12345A.
          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

          • Bobby78
            Member
            • Sep 2014
            • 47
            • United States

            #25
            Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

            Vd code bn44-00278a

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #26
              Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

              Hmm, no schematic. Have to do this the hard way. Can you remove the board and get detailed, clear photos of the top (white side) and bottom (green side) of the board. Be careful to allow the capacitors on it to discharge to a safe level (less than 30V DC.)
              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

              • Bobby78
                Member
                • Sep 2014
                • 47
                • United States

                #27
                Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                How's this?

                The back looks a little blurry, guess I'll try that one again
                Attached Files

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK

                  #28
                  Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                  Yeah, I'm going to need a clearer photo, any chance you can take a closer up picture, maybe in multiple photos?
                  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

                  • Bobby78
                    Member
                    • Sep 2014
                    • 47
                    • United States

                    #29
                    Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                    Would it help if I purchased the service manual? Would it have the schematics you need?

                    Comment

                    • Bobby78
                      Member
                      • Sep 2014
                      • 47
                      • United States

                      #30
                      Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                      Here are three more pics of the back
                      Attached Files

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #31
                        Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                        No need to purchase a manual, at least for now.
                        What is the part # on ICP801S, the multi-leaded chip?
                        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

                        • Bobby78
                          Member
                          • Sep 2014
                          • 47
                          • United States

                          #32
                          Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                          9d1y 2a20112
                          Attached Files
                          Last edited by Bobby78; 09-02-2014, 03:09 PM.

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #33
                            Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                            Datasheet:
                            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

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #34
                              Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                              Check DP803, DP804 for shorts across pins 1-3 to 2 (note pins 1 and 3 joined on PCB so will show as shorted)
                              With board installed in TV, check voltage on JP830, positive on JP830, negative on a PRIMARY_GND pin. Should be near 14.5V.
                              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

                              • Bobby78
                                Member
                                • Sep 2014
                                • 47
                                • United States

                                #35
                                Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                Sorry, you may have lost me. I don't see pin 3 connected to anything. I'm also not sure where DP803/4 are...

                                Comment

                                • Bobby78
                                  Member
                                  • Sep 2014
                                  • 47
                                  • United States

                                  #36
                                  Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                  Found the DPs!

                                  Comment

                                  • Bobby78
                                    Member
                                    • Sep 2014
                                    • 47
                                    • United States

                                    #37
                                    Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                    Oh, when you mentioned pins I thought you were referencing the IC. I think I've got it now

                                    Comment

                                    • Bobby78
                                      Member
                                      • Sep 2014
                                      • 47
                                      • United States

                                      #38
                                      Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                      Both DPs read 0.4 Ohms across 1/3 to 2

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                        1 being top pin, 2 being middle, 3 being bottom, you get a short between 1 and 2, 3 and 2?
                                        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

                                        • Bobby78
                                          Member
                                          • Sep 2014
                                          • 47
                                          • United States

                                          #40
                                          Re: Samsung PN58B860 Plasma suddenly shutdown and will not restart

                                          Yes

                                          Comment

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