Samsung LE26A457C1D Power problem, It Banged

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  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #21
    Re: Samsung LE26A457C1D Power problem, It Banged

    Any standby output from 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

    • aar5384
      Senior Member
      • Jan 2014
      • 82
      • England

      #22
      Re: Samsung LE26A457C1D Power problem, It Banged

      Nothing at all, it blws the slow blow 6.3 everytime

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #23
        Re: Samsung LE26A457C1D Power problem, It Banged

        Is there a BN44-###### number printed on the power board? To look up schematic.
        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

        • aar5384
          Senior Member
          • Jan 2014
          • 82
          • England

          #24
          Re: Samsung LE26A457C1D Power problem, It Banged

          Bn44-00214a

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: Samsung LE26A457C1D Power problem, It Banged

            Great. Got it


            So it is FP801S that is blowing? (6.3AH)
            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

            • selldoor
              Slow Learner
              • Dec 2010
              • 7870

              #26
              Re: Samsung LE26A457C1D Power problem, It Banged

              You could start checking for full shorts. on all the big components. Perhaps start with the
              3 diodes at the end of the board furthest from the mains socket.
              I would still consider making up a light bulb.
              You did get the bridge in the right way round? and test it again.
              Perhaps a clear picture of the back of the board would help us
              Please upload pictures using attachment function when ask for help on the repair
              http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • aar5384
                Senior Member
                • Jan 2014
                • 82
                • England

                #27
                Re: Samsung LE26A457C1D Power problem, It Banged

                Yep thats the fuse blowing, including the one in plug lead

                I thought about the light bulb but its something i couldnt get my head around and the shop round here only sells some nasty looking things that look like there made for offices and mine are led :/

                T rectifier oh cock! its in wrong way round! i put it in writing facing forwards instead of cut corner to the left lmao! Hangs head in shame!

                I will turn it around in a couple of hours when i get back and let you know

                Thanks for that :P i feel a right Noob now

                Comment

                • selldoor
                  Slow Learner
                  • Dec 2010
                  • 7870

                  #28
                  Re: Samsung LE26A457C1D Power problem, It Banged

                  Better test it again when you take it out, in case you have cocked sorry cooked it.
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                  • aar5384
                    Senior Member
                    • Jan 2014
                    • 82
                    • England

                    #29
                    Re: Samsung LE26A457C1D Power problem, It Banged

                    Thinking the same thing, good job I ordered 2 now when I turn it around , I Will be edging away from the plug socket as I knock it in with a brush pole expecting a loud bang lol

                    Comment

                    • aar5384
                      Senior Member
                      • Jan 2014
                      • 82
                      • England

                      #30
                      Re: Samsung LE26A457C1D Power problem, It Banged

                      Ok so ive taked the bridge out and tested it and its fine, however it still blew the fuse. I then started testing all the diodes so i disconnected them all and checked all of them and all again seem fine :/

                      Comment

                      • aar5384
                        Senior Member
                        • Jan 2014
                        • 82
                        • England

                        #31
                        Re: Samsung LE26A457C1D Power problem, It Banged

                        And thats the underside
                        Attached Files

                        if you find these attachements useful please consider making a small donation to the site

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #32
                          Re: Samsung LE26A457C1D Power problem, It Banged

                          If you power it up without the bridge installed does the fuse still blow?
                          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

                          • aar5384
                            Senior Member
                            • Jan 2014
                            • 82
                            • England

                            #33
                            Re: Samsung LE26A457C1D Power problem, It Banged

                            My soldering iron resembles that of a iron thats used to stamp burns into the ass of a cow, and if i remove it again the board around the bridge might be destroyed beyond repair so im a bit scared to take it out unless its the only way

                            it only blew the 5 am fuse in the plug this time and not the one on board, i was looking and forgive me i dont know what some of them are but if the green thing above power connector or resistor or the white box marked 330n K things that connect straight after fuse line between live and negative, do they fail often and allow current to short out?

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #34
                              Re: Samsung LE26A457C1D Power problem, It Banged

                              They can, there's also usually a MOV which can fail short, it is surge protector.
                              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

                              • aar5384
                                Senior Member
                                • Jan 2014
                                • 82
                                • England

                                #35
                                Re: Samsung LE26A457C1D Power problem, It Banged

                                Originally posted by tom66
                                They can, there's also usually a MOV which can fail short, it is surge protector.
                                Wonders what the MOV is

                                Comment

                                • aar5384
                                  Senior Member
                                  • Jan 2014
                                  • 82
                                  • England

                                  #36
                                  Re: Samsung LE26A457C1D Power problem, It Banged

                                  Just out of poking around i poped out resister RX801S and tested it and the meter didnt read anything from it either way around :/

                                  Comment

                                  • vinceroger69
                                    Badcaps Legend
                                    • Mar 2012
                                    • 6714
                                    • uk

                                    #37
                                    Re: Samsung LE26A457C1D Power problem, It Banged

                                    Originally posted by aar5384
                                    Thinking the same thing, good job I ordered 2 now when I turn it around , I Will be edging away from the plug socket as I knock it in with a brush pole expecting a loud bang lol
                                    got to say had to laugh at this i can imagain you doing it lol

                                    Comment

                                    • aar5384
                                      Senior Member
                                      • Jan 2014
                                      • 82
                                      • England

                                      #38
                                      Re: Samsung LE26A457C1D Power problem, It Banged

                                      I realy did do it lol

                                      I remember when i was like 6 or 7 and had a little black and white tv with a music tape player on in the bedroom , i went to plug it in one morning and we had plug sockets without on/off switches on them, and i pushed the plug in and it went was a bang and sparks flew out of the plug arc ing like realy scarey and the wire fell out of the plug and i kinda craped myself then too

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: Samsung LE26A457C1D Power problem, It Banged

                                        MOV:- http://en.wikipedia.org/wiki/Varistor
                                        for future ref.
                                        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

                                        • aar5384
                                          Senior Member
                                          • Jan 2014
                                          • 82
                                          • England

                                          #40
                                          Re: Samsung LE26A457C1D Power problem, It Banged

                                          Ok it didnt blow after i took out the bridge

                                          Comment

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