samsung 50 inch plasma

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  • adamp91gvm
    Badcaps Veteran
    • Jan 2014
    • 706
    • uk

    #21
    Re: samsung 50 inch plasma

    80794. Wr4500

    Comment

    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK

      #22
      Re: samsung 50 inch plasma

      Can't find anything on that - are you sure?
      Yes that's how you test across from Vsc to Vsch which should give 130V to 150V or so.
      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

      • adamp91gvm
        Badcaps Veteran
        • Jan 2014
        • 706
        • uk

        #23
        Re: samsung 50 inch plasma

        That's from 161v to 30v ish

        Comment

        • adamp91gvm
          Badcaps Veteran
          • Jan 2014
          • 706
          • uk

          #24
          Re: samsung 50 inch plasma

          Sorry 80794 mr4500

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: samsung 50 inch plasma

            OK so it looks like the fault is with that IC or with a startup capacitor.
            Would need that IC part # definitively confirmed to indicate how to test, that part # provided brings no results.
            I think it's an ON SEMI part in a TO-220-7 package.
            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

            • adamp91gvm
              Badcaps Veteran
              • Jan 2014
              • 706
              • uk

              #26
              Re: samsung 50 inch plasma

              Put number above

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #27
                Re: samsung 50 inch plasma

                SHINDENGEN MR4500

                (mostly in Chinese...)

                See if you can check pin 4 voltage, with the negative lead on the chassis and positive lead on the pin. Pins are numbered from the left of the device side with part# on 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

                • adamp91gvm
                  Badcaps Veteran
                  • Jan 2014
                  • 706
                  • uk

                  #28
                  Re: samsung 50 inch plasma

                  0.24v off pin 4 from left to right

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #29
                    Re: samsung 50 inch plasma

                    How sure are you about that? Pin 4 connects to C5058.
                    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

                    • adamp91gvm
                      Badcaps Veteran
                      • Jan 2014
                      • 706
                      • uk

                      #30
                      Re: samsung 50 inch plasma

                      Yes definitely sure

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #31
                        Re: samsung 50 inch plasma

                        What voltage do you measure across C5058, the little capacitor next to the IC?
                        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

                        • adamp91gvm
                          Badcaps Veteran
                          • Jan 2014
                          • 706
                          • uk

                          #32
                          Re: samsung 50 inch plasma

                          Ether side -0.25v up and down

                          Comment

                          • tom66
                            EVs Rule
                            • Apr 2011
                            • 32560
                            • UK

                            #33
                            Re: samsung 50 inch plasma

                            It would appear that IC is defective then, this could cause your issue.
                            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

                            • adamp91gvm
                              Badcaps Veteran
                              • Jan 2014
                              • 706
                              • uk

                              #34
                              Re: samsung 50 inch plasma

                              I might have a look if I have any I have on other boards I can try in it

                              Comment

                              • mmartell
                                Badcaps Legend
                                • Oct 2013
                                • 3189
                                • Canada

                                #35
                                Re: samsung 50 inch plasma

                                Real-Time tech support. Hat off to you, tom.

                                Comment

                                • adamp91gvm
                                  Badcaps Veteran
                                  • Jan 2014
                                  • 706
                                  • uk

                                  #36
                                  Re: samsung 50 inch plasma

                                  Tom any idea where I can get one of them ic's

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #37
                                    Re: samsung 50 inch plasma

                                    eBay?
                                    http://www.ebay.co.uk/sch/i.html?_tr...at=0&_from=R40

                                    MR4520 might work, not certain as no English datasheet available.

                                    Probably should check some other things before ordering a £30 IC... that's a crazy price.
                                    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

                                    • adamp91gvm
                                      Badcaps Veteran
                                      • Jan 2014
                                      • 706
                                      • uk

                                      #38
                                      Re: samsung 50 inch plasma

                                      Does Google translate not change the language

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: samsung 50 inch plasma

                                        Not really much good for technical documents! Machine language translation is too far behind to make good sense of stuff like that.

                                        Part of the resonance
                                        Part of the resonant operation ni Yori high efficiency Low Bruno Sui ズ of を Actual cash
                                        Pressure-resistant high-speed 900V IGBT を use (MR40XX Silysia ー ズ)
                                        100V · 200V · W / W power supply into force で big ni Outward Applied possible.
                                        Stand-by Outward Applied ((ハ Buses ゙ ー strike lacing lacing strike Suites ー ド ゙))
                                        Standby Reduction na ni effective strike lacing perfect ー ド Kirikae function を deployment.
                                        Starting circuit built-ni Yori But do not start to resist
                                        After starting は を starter circuit breaker, starter circuit losses を で Full Reduction
                                        ソ gift Suites Suites Suites ド ゙ ソ gift gift ra ra Sui Sui sleeve ゙ loop circuit ni ni Yori Yori whispered su Bruno Bruno Sui Sui ズ ゙ Sinochem を を Actual cash
                                        ...good luck!
                                        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

                                        • adamp91gvm
                                          Badcaps Veteran
                                          • Jan 2014
                                          • 706
                                          • uk

                                          #40
                                          Re: samsung 50 inch plasma

                                          Ahhh I see lol

                                          Comment

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