lg 32lg3000 white screen faint picture

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  • flocko
    Badcaps Legend
    • Nov 2012
    • 1121
    • uk

    #1

    lg 32lg3000 white screen faint picture

    Hi all well here we go again picked this up and thought a new t-con board would sort it but no luck, so heres what i have powers up ,backlight on, sound on, picture faint will run though all menus but all with no colour and negative image, I am running it off a dvd and it runs though both the scart sockets, here are some photos to start with any help will be very gratefully received thanks in advance
    Attached Files
  • selldoor
    Slow Learner
    • Dec 2010
    • 7870

    #2
    Re: lg 32lg3000 white screen faint picture

    Check for fuses on the tcon and clean the connectors tcon to panel.
    Perhaps a picture of the faded picture would help.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment

    • flocko
      Badcaps Legend
      • Nov 2012
      • 1121
      • uk

      #3
      Re: lg 32lg3000 white screen faint picture

      not a very good photo of screen to make it show i had to take it from the side, i get the same picture with the old and new T-con cards did clean up the ribbons when i changed the cards, will check lead and plugs t-con to av with meter next then pull the av board and have a good look at that
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: lg 32lg3000 white screen faint picture

        This could be a bad panel. Not 100%, but we have seen faint dark picture indicate a bad panel before. It is sometimes fixable. The only board that could cause this in my opinion would be the T-con, but you have replaced that.
        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

        • flocko
          Badcaps Legend
          • Nov 2012
          • 1121
          • uk

          #5
          Re: lg 32lg3000 white screen faint picture

          had a look with av board out c112 (top left in line with white socket) looks a bit sad and some around it dont look to good, were can you get this type of cap have not replaced these before?
          Attached Files

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: lg 32lg3000 white screen faint picture

            The AV board could only produce this effect if the contrast etc. were set wrong but usually the menus/OSD are always visible even with wrong contrast.
            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

            • flocko
              Badcaps Legend
              • Nov 2012
              • 1121
              • uk

              #7
              Re: lg 32lg3000 white screen faint picture

              Hi Tom every thing seams to be working on the menus i can increase contrast up /down,backlight, brightness, but not colour. Does the av not feed the T-con its info to power the screen and is there a way to check the T-con has the right supplys from the av thanks for your help

              Comment

              • selldoor
                Slow Learner
                • Dec 2010
                • 7870

                #8
                Re: lg 32lg3000 white screen faint picture

                Is there a factory reset in the menu?

                Have you found if you can get into the Service menue with a buttton press
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • selldoor
                  Slow Learner
                  • Dec 2010
                  • 7870

                  #9
                  Re: lg 32lg3000 white screen faint picture

                  There are sometimes places on the tcon where you can check voltages marked like c5v c3v and so on also if there is a fuse on the tcon that is usually on the feed from the main board so you could check the voltage on that.
                  Please upload pictures using attachment function when ask for help on the repair
                  http://www.badcaps.net/forum/showthread.php?t=39740

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #10
                    Re: lg 32lg3000 white screen faint picture

                    Wait, so you can see the menus easily and clearly? Can you show us what they look like?
                    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

                      #11
                      Re: lg 32lg3000 white screen faint picture

                      Originally posted by flocko
                      had a look with av board out c112 (top left in line with white socket) looks a bit sad and some around it dont look to good, were can you get this type of cap have not replaced these before?
                      RS online have some - not checked sizes
                      http://uk.rs-online.com/web/c/passiv...unt+capacitors
                      Please upload pictures using attachment function when ask for help on the repair
                      http://www.badcaps.net/forum/showthread.php?t=39740

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #12
                        Re: lg 32lg3000 white screen faint picture

                        To access service menu on LG:

                        Power on
                        Hold MENU on remote
                        Hold MENU on TV (at same time as remote)
                        Wait 5~10 seconds
                        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

                        • flocko
                          Badcaps Legend
                          • Nov 2012
                          • 1121
                          • uk

                          #13
                          Re: lg 32lg3000 white screen faint picture

                          no the same washed out picture, what about the caps on the av board will these not be a problem i have found replacements Conrads have them,I will take photo of t_con board and post

                          Comment

                          • flocko
                            Badcaps Legend
                            • Nov 2012
                            • 1121
                            • uk

                            #14
                            Re: lg 32lg3000 white screen faint picture

                            photo front and back t-con broard will have to refit boards to set before i can get service menu up
                            Attached Files

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #15
                              Re: lg 32lg3000 white screen faint picture

                              It would be very unusual for a main board to cause that distortion.
                              It is likely the panel, it may be repairable.
                              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

                                #16
                                Re: lg 32lg3000 white screen faint picture

                                The fuse is at F1 - when you have it connected you can test the voltage. Cant see any marked voltage test points. I think they are all together just above the processor but the label doesnt have any values.
                                Please upload pictures using attachment function when ask for help on the repair
                                http://www.badcaps.net/forum/showthread.php?t=39740

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK

                                  #17
                                  Re: lg 32lg3000 white screen faint picture

                                  He is getting some picture, so it cannot be the fuse.

                                  It could be low 12V/5V applied to T-con, would be unusual but it might be possible...
                                  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

                                  • flocko
                                    Badcaps Legend
                                    • Nov 2012
                                    • 1121
                                    • uk

                                    #18
                                    Re: lg 32lg3000 white screen faint picture

                                    Yes see were you mean lv0/1/2/3/4/5/6 lv0+/1+/2+/3+/4+/5+/6+ what about gsp.gsc/goe/pol/soe far right at top what am i looking for volt wise dc under 24 or more

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #19
                                      Re: lg 32lg3000 white screen faint picture

                                      At fuse "F1" marked TK what voltage are you seeing either side of 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

                                      • flocko
                                        Badcaps Legend
                                        • Nov 2012
                                        • 1121
                                        • uk

                                        #20
                                        Re: lg 32lg3000 white screen faint picture

                                        12.36v each side of fuse i had a look at the test points but there so small i think i would short them out if i put a meter on them

                                        Comment

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