Samsung SyncMaster 2253LW - Flashes

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  • devilblessed
    Member
    • Aug 2014
    • 16
    • Portugal

    #1

    Samsung SyncMaster 2253LW - Flashes

    Hi everyone.

    I've got a problem with my SyncMaster 2253LW.
    I've recorded a video so it's easy for you to see.

    www.youtube.com/watch?v=PB8DV3iwMzs

    It will do those flashes when gaming or regular use and it's not my graphics card because i've tested it on another monitor.

    Peace
    Last edited by devilblessed; 08-17-2014, 09:24 AM.
  • selldoor
    Slow Learner
    • Dec 2010
    • 7870

    #2
    Re: Samsung SyncMaster 2253LW - Flashes

    what does the power led do when it is flashing.
    Have you got a multimeter and soldering equipment.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment

    • devilblessed
      Member
      • Aug 2014
      • 16
      • Portugal

      #3
      Re: Samsung SyncMaster 2253LW - Flashes

      i've soldering equipment but not a multimeter at the moment. When it flashes the power led stays normal

      Comment

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #4
        Re: Samsung SyncMaster 2253LW - Flashes

        Not going to be able to test much without a mutimeter.

        Does it make any difference if you change the resolution or reduce the brightness

        Try disconnecting and reconnecting all cables.

        While you are in thre take some good clear pictures - One of the whole of the set then
        one of each board
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • devilblessed
          Member
          • Aug 2014
          • 16
          • Portugal

          #5
          Re: Samsung SyncMaster 2253LW - Flashes

          It doesnt affect ifi change the brightness or resolution or even if i change cables.
          When i get a multimeter i will open my screen and take some photos.
          I'll do it in a few days. Thanks

          Comment

          • devilblessed
            Member
            • Aug 2014
            • 16
            • Portugal

            #6
            Re: Samsung SyncMaster 2253LW - Flashes

            Here are a few photos of the boards.

            Here's the link to my Google+, the last post contains all the photos i took.

            plus.google.com/u/0/+AlexandreDuarte/posts
            Attached Files

            Comment

            • devilblessed
              Member
              • Aug 2014
              • 16
              • Portugal

              #7
              Re: Samsung SyncMaster 2253LW - Flashes

              just by looking at the caps i didn't see anything wrong aside from the 4th pic showing a cap that is starting to leak.

              Comment

              • selldoor
                Slow Learner
                • Dec 2010
                • 7870

                #8
                Re: Samsung SyncMaster 2253LW - Flashes

                Not leaking that is just flux
                Report back when you have a meter - if this is a one off fixing just a cheap one will do.
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • devilblessed
                  Member
                  • Aug 2014
                  • 16
                  • Portugal

                  #9
                  Re: Samsung SyncMaster 2253LW - Flashes

                  Hi. Just got my multimeter and i'm ready for instructions

                  Comment

                  • selldoor
                    Slow Learner
                    • Dec 2010
                    • 7870

                    #10
                    Re: Samsung SyncMaster 2253LW - Flashes

                    Ok - can you get at the green torpedo fuse when it is all set up?
                    If so test the voltage at that fuse - meter on vDC200 - depending on the result
                    you might be able to lower to 20vDC . Keep the probe in place and see if it varies as the monitor goes off/on/off Black probe on chassis ground.
                    Please upload pictures using attachment function when ask for help on the repair
                    http://www.badcaps.net/forum/showthread.php?t=39740

                    Comment

                    • devilblessed
                      Member
                      • Aug 2014
                      • 16
                      • Portugal

                      #11
                      Re: Samsung SyncMaster 2253LW - Flashes

                      i'll test that today or maybe tomorrow.

                      Comment

                      • devilblessed
                        Member
                        • Aug 2014
                        • 16
                        • Portugal

                        #12
                        Re: Samsung SyncMaster 2253LW - Flashes

                        Is that the one?
                        Attached Files

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #13
                          Re: Samsung SyncMaster 2253LW - Flashes

                          Yes - how many other green things do you see?
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • devilblessed
                            Member
                            • Aug 2014
                            • 16
                            • Portugal

                            #14
                            Re: Samsung SyncMaster 2253LW - Flashes

                            Hi. I'm testing it. With the monitor off it gives me a reading of 13.4 with it on it reads 10.2

                            Comment

                            • devilblessed
                              Member
                              • Aug 2014
                              • 16
                              • Portugal

                              #15
                              Re: Samsung SyncMaster 2253LW - Flashes

                              Should i buy a new board?

                              Comment

                              • selldoor
                                Slow Learner
                                • Dec 2010
                                • 7870

                                #16
                                Re: Samsung SyncMaster 2253LW - Flashes

                                There are lots more tests - I thought others would have chipped in by now.
                                Next is BIG cap Carefull HIGH VOLTAGE. Set meter on vDC600 and test
                                across the legs. Hold to see if it varies with the on/off/on.

                                If that is steady then next would be the two inverter section caps- one above the green fuse and the one above that - should be the same type.
                                Set meter on cDC200 - may be difficult to get at

                                We do not have a good clear picture of the back of the power board, I am thinking could be a bad solder joint - dont look great in the section.

                                Does the fault come on straight from a cold switch on or does it start after a few minutes?
                                I dont think there is much wrong just needs more tests if you have time.
                                Please upload pictures using attachment function when ask for help on the repair
                                http://www.badcaps.net/forum/showthread.php?t=39740

                                Comment

                                • vinceroger69
                                  Badcaps Legend
                                  • Mar 2012
                                  • 6714
                                  • uk

                                  #17
                                  Re: Samsung SyncMaster 2253LW - Flashes

                                  Originally posted by devilblessed
                                  Hi. I'm testing it. With the monitor off it gives me a reading of 13.4 with it on it reads 10.2
                                  just to make sure you tested the fuse right black probe on chassis ground and test voltage to one side of the fuse then then test other side.

                                  Comment

                                  • devilblessed
                                    Member
                                    • Aug 2014
                                    • 16
                                    • Portugal

                                    #18
                                    Re: Samsung SyncMaster 2253LW - Flashes

                                    Originally posted by selldoor
                                    Does the fault come on straight from a cold switch on or does it start after a few minutes?
                                    I dont think there is much wrong just needs more tests if you have time.
                                    Its very ramdom. I cant replicate the fault when ever I want.

                                    Comment

                                    • devilblessed
                                      Member
                                      • Aug 2014
                                      • 16
                                      • Portugal

                                      #19
                                      Re: Samsung SyncMaster 2253LW - Flashes

                                      The big cap doesnt output any reading, monitor on or off. The next two caps give me a reading of 13.2. I've tested all the caps and the only one the doesn't give me any reading is the one I thought it was leaking. The one in the picture above.

                                      Comment

                                      • devilblessed
                                        Member
                                        • Aug 2014
                                        • 16
                                        • Portugal

                                        #20
                                        Re: Samsung SyncMaster 2253LW - Flashes

                                        Its the one in this picture
                                        Attached Files

                                        Comment

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