Need resistor help

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  • Fordman
    Member
    • Dec 2017
    • 28
    • United States

    #1

    Need resistor help

    Trying to repair a sc board for a TC-P50S2. I put a parts in and got one doiad backwards and fried two resistors. Having a hard time finding the r601. Looking for help from someone that knows more about resistors than me. Open to all options to fix.Click image for larger version

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  • happyade123
    Senior Member
    • Feb 2015
    • 92
    • Australia

    #2
    Re: Need resistor help

    Try this service manual for the S1 may be similar. Parts list at the end lists R 601 not sure if its the same but worth a try. Oops sorry just realised your first picture had it lol. 620 Ohm metal Glazed 1/2 a watt Resistor. I can't see it being 620 megohm as what would be it's point unless some sort of current limiter.It is an exact value resistor though and must be replaced with original for ensured safety so wait for someone else to chime in.
    Someone more knowledgeable might chip in.
    http://au.element14.com/vishay/mmb02...207/dp/2471822
    Attached Files
    Last edited by happyade123; 01-02-2018, 08:08 PM.

    Comment

    • Fordman
      Member
      • Dec 2017
      • 28
      • United States

      #3
      Re: Need resistor help

      Yeah that's what digikey and mouser say 6.2Mohm is rare and a high value

      Comment

      • Fordman
        Member
        • Dec 2017
        • 28
        • United States

        #4
        Re: Need resistor help

        The only other Mohm resistor is R507 but can't find it any where at all on the board.

        Comment

        • happyade123
          Senior Member
          • Feb 2015
          • 92
          • Australia

          #5
          Re: Need resistor help

          R 507 is near IC 521 on my manual not sure if your board is different Fordman.

          Comment

          • Fordman
            Member
            • Dec 2017
            • 28
            • United States

            #6
            Re: Need resistor help

            I think it's different Click image for larger version

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            Comment

            • happyade123
              Senior Member
              • Feb 2015
              • 92
              • Australia

              #7
              Re: Need resistor help

              So does your board resemble this Fordman? See Attachment?
              Attached Files

              Comment

              • Fordman
                Member
                • Dec 2017
                • 28
                • United States

                #8
                Re: Need resistor help

                Click image for larger version

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                Click image for larger version

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                No I don't think so at all.

                Comment

                • Dumah Brazorf
                  Senior Member
                  • Jun 2013
                  • 179
                  • Italy

                  #9
                  Re: Need resistor help

                  No way that resistor is 620Mohm, maybe 62.
                  Look at the board layout. The trace is big and it sits between the drain of Q601 and D618.
                  I think it's very low resistance working as a fuse... and it worked... maybe 6R2, looks like the 2 7R5 in parallel nearby...
                  What are Q601 and D618?
                  Last edited by Dumah Brazorf; 01-04-2018, 03:17 PM.

                  Comment

                  • Fordman
                    Member
                    • Dec 2017
                    • 28
                    • United States

                    #10
                    Re: Need resistor help

                    So what would you suggest to use for size.

                    Comment

                    • Dumah Brazorf
                      Senior Member
                      • Jun 2013
                      • 179
                      • Italy

                      #11
                      Re: Need resistor help

                      Figure out what are Q601 and D618.
                      Ask to some ebay reseller!!! :P

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #12
                        Re: Need resistor help

                        Which service manual you get this pictures from for this TNPA5105?
                        https://www.badcaps.net/forum/attach...3&d=1515066176
                        Never stop learning
                        Basic LCD TV and Monitor troubleshooting guides.
                        http://www.badcaps.net/forum/showthr...956#post305956

                        Voltage Regulator (LDO) testing:
                        http://www.badcaps.net/forum/showthr...999#post300999

                        Inverter testing using old CFL:
                        http://www.badcaps.net/forum/showthr...er+testing+cfl

                        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                        http://s807.photobucket.com/user/budm/library/

                        TV Factory reset codes listing:
                        http://www.badcaps.net/forum/showthread.php?t=24809

                        Comment

                        • Dumah Brazorf
                          Senior Member
                          • Jun 2013
                          • 179
                          • Italy

                          #13
                          Re: Need resistor help

                          This:
                          P.82

                          Comment

                          • Dumah Brazorf
                            Senior Member
                            • Jun 2013
                            • 179
                            • Italy

                            #14
                            Re: Need resistor help

                            Got it.
                            The correct components in the list begin with "R16". So R16601 is 1ohm 0,33W, R16609 is 2kOhm 0,33W as we already know (202, 20 * 10^2)
                            P.104
                            Last edited by Dumah Brazorf; 01-04-2018, 04:09 PM.

                            Comment

                            • Fordman
                              Member
                              • Dec 2017
                              • 28
                              • United States

                              #15
                              Re: Need resistor help

                              So the R601 and R609 isn't the right things. I want the R16601 and R16609.

                              Comment

                              • budm
                                Badcaps Legend
                                • Feb 2010
                                • 40746
                                • USA

                                #16
                                Re: Need resistor help

                                https://www.manualslib.com/download/...-Tc-P50s2.html

                                Service manual Page 68 R16601 is 1 Ohm resistor on that SC board TNPA5105. It is not R601, you have to match the part designator per schematic.
                                Part list page 104.
                                The MOSFET is probably shorted out.
                                Attached Files
                                Never stop learning
                                Basic LCD TV and Monitor troubleshooting guides.
                                http://www.badcaps.net/forum/showthr...956#post305956

                                Voltage Regulator (LDO) testing:
                                http://www.badcaps.net/forum/showthr...999#post300999

                                Inverter testing using old CFL:
                                http://www.badcaps.net/forum/showthr...er+testing+cfl

                                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                                http://s807.photobucket.com/user/budm/library/

                                TV Factory reset codes listing:
                                http://www.badcaps.net/forum/showthread.php?t=24809

                                Comment

                                • Fordman
                                  Member
                                  • Dec 2017
                                  • 28
                                  • United States

                                  #17
                                  Re: Need resistor help

                                  Ok thanks I was just going off the board position as what part I needed.

                                  Comment

                                  • Fordman
                                    Member
                                    • Dec 2017
                                    • 28
                                    • United States

                                    #18
                                    Re: Need resistor help

                                    I put in d16618 backwards unknowly and powered up and popped the resistors. So trying to repair them to see if my board works after I put the the repair kit from shopjimmy.com.

                                    Comment

                                    • Dumah Brazorf
                                      Senior Member
                                      • Jun 2013
                                      • 179
                                      • Italy

                                      #19
                                      Re: Need resistor help

                                      I know it's dodgy but you can test it using a thin wire from a stranded one as a fuse in substitution of R601.
                                      If i'm correct that r601 blows with a current of 0,5-0,6A.
                                      But why also r609 is dead? Check for shorts on that line.
                                      Last edited by Dumah Brazorf; 01-05-2018, 02:06 PM.

                                      Comment

                                      • Fordman
                                        Member
                                        • Dec 2017
                                        • 28
                                        • United States

                                        #20
                                        Re: Need resistor help

                                        Wouldn't the diode being backwards cause my blown resistors.

                                        Comment

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