Sony KDL-40V4100 Blown out color

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  • Neonpeon
    Member
    • May 2012
    • 41
    • USA

    #1

    Sony KDL-40V4100 Blown out color

    Can anyone recommend where to start looking on this one?
    The attached picture is with the brightness turned down quite a bit. Overall the picture looks washed out when I reset the settings to defaults. It's kind of like what you would get by setting a computer monitor to 16 colors.
    Attached Files
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Sony KDL-40V4100 Blown out color

    Can you show us what it looks with all controls to factory settings? Could be GAMMA chip fault or LVDS fault, the sudden transitions between colours are throwing me off it being the gamma chip though.
    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

    • Neonpeon
      Member
      • May 2012
      • 41
      • USA

      #3
      Re: Sony KDL-40V4100 Blown out color

      Here is my Vizio 47 compared to the Sony with the same picture.
      The Sony video settings were reset to default. (From the main menu, not from Service menu.)
      I have cleaned the LVDS Cable, and tcon connectors.
      Doesn't seem to change at all.
      Attached Files

      Comment

      • freakaftr8
        Badcaps Legend
        • Oct 2012
        • 3743
        • USA

        #4
        Re: Sony KDL-40V4100 Blown out color

        this looks exactly like a TV that was dropped off to me last night exact same Sony exact mines a z4100same picture problem it looks like a gamma IC on the t-con board to me like tom66 said. I havent cracked mine open yet. Do you see a very faint darker left or right side of screen?
        Last edited by freakaftr8; 10-19-2013, 09:17 AM.
        Did I leave the soldering iron on?

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #5
          Re: Sony KDL-40V4100 Blown out color

          Manual for 46" which should be close enough


          Try accessing service menu, can you see easily accessible reset option? It could be that the RGB DRV and offset are set wrong due to corrupted memory.

          If that doesn't fix it, can we get a pic of the T-con so the gamma chip can be tested?
          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

          • Neonpeon
            Member
            • May 2012
            • 41
            • USA

            #6
            Re: Sony KDL-40V4100 Blown out color

            I can get into service menu. Just have no idea what to do after I get there. Now that I look at it with my hdmi cable from laptop going into it, it looks like the detail is all there, it just kinda looks like i am looking at it through a white milk carton. It's just washed out.

            It's not faint on either side. It looks to be pretty much solid. When I use the NEC Pattern Generator on it, and it looks great. All the colors are crisp and detailed.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK

              #7
              Re: Sony KDL-40V4100 Blown out color

              Does your laptop happen to have a Nvidia graphics chipset?
              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

              • Neonpeon
                Member
                • May 2012
                • 41
                • USA

                #8
                Re: Sony KDL-40V4100 Blown out color

                No it's a Radeon 6620

                Comment

                • Neonpeon
                  Member
                  • May 2012
                  • 41
                  • USA

                  #9
                  Re: Sony KDL-40V4100 Blown out color

                  Here's a pic showing the display with the Laptop in the foreground.
                  Might also mention that I am using the same HDMI port on all these pics.
                  Attached Files
                  Last edited by Neonpeon; 10-19-2013, 09:37 AM.

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #10
                    Re: Sony KDL-40V4100 Blown out color

                    I was asking because some Nvidia chipsets have issues with HDMI and sending RGB vs YPbPr data which some TVs do not correctly decode. Try seeing if there is an option for colourspace. Since you say test pattern generator (NEC?) looked OK?
                    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

                    • Neonpeon
                      Member
                      • May 2012
                      • 41
                      • USA

                      #11
                      Re: Sony KDL-40V4100 Blown out color

                      It Looks ok, but I think it is because it has a mostly black background. Also, When I change settings on the tv, it flashes from dark to light. In the second it is dark, the image looks good. It is almost as if It has too much backlight which is washing out the screen?

                      Comment

                      • Neonpeon
                        Member
                        • May 2012
                        • 41
                        • USA

                        #12
                        Re: Sony KDL-40V4100 Blown out color

                        Here is how to get to the service menu:
                        Turn off the set
                        Hit Display, Vol +, 5, then power.

                        Here is the service menu. I can hit 2 and get to this screen which shows reset, but I have no idea what to do now.
                        I'm up for trying a complete reset, if anyone knows how to do this.
                        Attached Files
                        Last edited by Neonpeon; 10-19-2013, 10:03 AM.

                        Comment

                        • dcapper
                          Badcaps Veteran
                          • Dec 2013
                          • 496
                          • Canada

                          #13
                          Re: Sony KDL-40V4100 Blown out color

                          I have the same tv doing this. Did you figure it out?

                          Comment

                          • neilc6
                            Badcaps Legend
                            • Nov 2015
                            • 1550
                            • Canada

                            #14
                            Re: Sony KDL-40V4100 Blown out color

                            Most likely AS15F chip on Tcon board.

                            Comment

                            • maxvalutech
                              Badcaps Veteran
                              • Dec 2014
                              • 804
                              • australia

                              #15
                              Re: Sony KDL-40V4100 Blown out color

                              Yes tcon problem usually and if board economical then replace provided it isn't one bonded to screen.

                              Comment

                              • nomoresonys
                                Badcaps Legend
                                • Jan 2013
                                • 12128
                                • U.S.

                                #16
                                Re: Sony KDL-40V4100 Blown out color

                                http://www.ustvparts.com/apps/websto...s/show/4290766 Think that one will work, might want to triple check tho, unless you want to try changing out on component level.

                                Comment

                                • dcapper
                                  Badcaps Veteran
                                  • Dec 2013
                                  • 496
                                  • Canada

                                  #17
                                  Re: Sony KDL-40V4100 Blown out color

                                  Awesome! I kinda figured that would be it.

                                  Comment

                                  • aaronwt6
                                    Badcaps Veteran
                                    • Apr 2013
                                    • 855
                                    • US

                                    #18
                                    Re: Sony KDL-40V4100 Blown out color

                                    Highly unlikely that's the correct T-con for your TV. Most likely you have an AUO LCD panel. That one is for a Samsung panel. You're going to find the AUO replacement closer to $100.

                                    Comment

                                    • nomoresonys
                                      Badcaps Legend
                                      • Jan 2013
                                      • 12128
                                      • U.S.

                                      #19
                                      Re: Sony KDL-40V4100 Blown out color

                                      .
                                      Last edited by nomoresonys; 05-10-2018, 05:30 PM.

                                      Comment

                                      • nomoresonys
                                        Badcaps Legend
                                        • Jan 2013
                                        • 12128
                                        • U.S.

                                        #20
                                        Re: Sony KDL-40V4100 Blown out color

                                        Originally posted by aaronwt6
                                        Highly unlikely that's the correct T-con for your TV. Most likely you have an AUO LCD panel. That one is for a Samsung panel. You're going to find the AUO replacement closer to $100.
                                        NO not at all, it's a Sony.

                                        Comment

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