Samsung LNS4695DX bad main board

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA
    #1

    Samsung LNS4695DX bad main board

    This one is pretty beat up from the out side, the setup menu looks OK, but the video is full of noise. This seems to be common problem when this TV came out, the fix was to replace the main board. So far it is no affected by hot or cold. I will be doing more checking.
    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
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Samsung LNS4695DX bad main board

      This is a very common issue with Samsung DLPs, and I believe the main board is the same or very similar for these LCD TVs. One of those Samsung RAM chips has failed. You can remove and replace them.
      Last edited by tom66; 02-19-2013, 04:30 AM.
      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

        • Sparky2013
          New Member
          • Nov 2013
          • 7
          • Usa
          #3
          Re: Samsung LNS4695DX bad main board

          i have a recently given one of these to fix. Model # LN-S4695D to TOM66 you feel confident that the ram chips is the problem?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Samsung LNS4695DX bad main board

              Not certain, not done it myself....
              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

                • newtothis
                  Badcaps Legend
                  • Mar 2013
                  • 1556
                  • england
                  #5
                  Re: Samsung LNS4695DX bad main board

                  The symptoms do mimic that of bad solder connections on VRAM, Same happens to graphics cards for computers.

                  VRAM on Graphics Cards is BGA, Not sure about in TV's

                    Comment

                    • Sparky2013
                      New Member
                      • Nov 2013
                      • 7
                      • Usa
                      #6
                      Re: Samsung LNS4695DX bad main board

                      My symptoms are pretty much just as pictured above.
                      one notable thing is ant menu driven on screen stuff looks fine.
                      it just goes wacky with hdmi input, all 4the same. and off air reception is same regardless of resolution it pics up.

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK
                          #7
                          Re: Samsung LNS4695DX bad main board

                          This one uses a mix of standard SDRAM and BGA type DDR(1/2).
                          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

                            • Sparky2013
                              New Member
                              • Nov 2013
                              • 7
                              • Usa
                              #8
                              Re: Samsung LNS4695DX bad main board

                              here are images of my tv. if it helps anyone
                              Attached Files

                                Comment

                                • Steamy777
                                  New Member
                                  • Oct 2013
                                  • 8
                                  • Canada
                                  #9
                                  Re: Samsung LNS4695DX bad main board

                                  Budm what happened with the tv I have the same problem

                                    Comment

                                    • budm
                                      Badcaps Legend
                                      • Feb 2010
                                      • 40746
                                      • USA
                                      #10
                                      Re: Samsung LNS4695DX bad main board

                                      I parted it out.
                                      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

                                        • Steamy777
                                          New Member
                                          • Oct 2013
                                          • 8
                                          • Canada
                                          #11
                                          Re: Samsung LNS4695DX bad main board

                                          Why never give up lol so u didn't even both with the chip?? anyone else with an idea on the tv???

                                            Comment

                                            • budm
                                              Badcaps Legend
                                              • Feb 2010
                                              • 40746
                                              • USA
                                              #12
                                              Re: Samsung LNS4695DX bad main board

                                              I used the spare parts to fix other TVs, I have way many TVs to fix up, when parts of one TV can be used to fix other 3 or 4 then it makes no sense to fix one. Did you try the new chips?
                                              Last edited by budm; 05-05-2014, 04:06 PM.
                                              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

                                                • Steamy777
                                                  New Member
                                                  • Oct 2013
                                                  • 8
                                                  • Canada
                                                  #13
                                                  Re: Samsung LNS4695DX bad main board

                                                  No not sure where that chip is on the board lol. Was hoping I could find a cheaper board but they still want 200 for one

                                                    Comment

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