Samsung Synchmaster 2693HM WHITE SCREEN

Collapse
X
Collapse
+ More Options
Posts
 
  • Time
  • Show
Clear All
new posts
  • momaka
    master hoarder
    • May 2008
    • 12170
    • Bulgaria

    #21
    Re: Samsung Synchmaster 2693HM WHITE SCREEN

    Yes they look okay to me as well.

    Next, measure the voltages on these rails. For ground, you can use any metal part of the monitor's case.

    Comment

    • Chris02
      New Member
      • Jan 2012
      • 9
      • Germany

      #22
      Re: Samsung Synchmaster 2693HM WHITE SCREEN

      Hi!

      I hope that it is ok, that I'll post with my Problem in this thread too. If not tell me and I'll opend a new one.

      I have got a 2693HM which starts only with a white screen. I knew before I read this thread, that my fault comes from T-CON board.

      I already measured the resistances between the testpoint and their voltages:

      VEEG 41,8k / 0,385V
      VDDG 304 / 0V
      VDDD 141 / 3,325V
      VDDA 5,7k / 0V

      5V supply voltage is ok.

      And I can't find any blown tracks on the PCB.

      I hope you have got also some tipps for me and we three can fix both monitors!

      Regards
      Chris

      Comment

      • momaka
        master hoarder
        • May 2008
        • 12170
        • Bulgaria

        #23
        Re: Samsung Synchmaster 2693HM WHITE SCREEN

        Originally posted by Chris02
        I already measured the resistances between the testpoint and their voltages:

        VEEG 41,8k / 0,385V
        VDDG 304 / 0V
        VDDD 141 / 3,325V
        VDDA 5,7k / 0V

        5V supply voltage is ok.
        Resistances seem okay, but the voltages for VDDA, VDDG, and VEEG are all gone. Without VDDA, VDDG and VEEG won't come on either.
        Measure the resistance for all of the small ceramic capacitors to the right of IC301 and IC302 (those RAM chips).
        Since your board my be slightly different, it is advisable to post some pictures of your board. At this point, I would say open a new thread, just so that we don't confuse which member had which problem with their t-con.

        Comment

        • OncleOh
          Member
          • Dec 2011
          • 16

          #24
          Re: Samsung Synchmaster 2693HM WHITE SCREEN

          Sorry for too long delay.
          Here are the readings:
          VDDA 5,9K / 13,12V
          VDDO 1,5k / 3,3V
          VEEG 41k / 7V
          VDDG 100k / 27,4V

          Regards!
          Leo

          Comment

          • momaka
            master hoarder
            • May 2008
            • 12170
            • Bulgaria

            #25
            Re: Samsung Synchmaster 2693HM WHITE SCREEN

            Those readings seem good. Not sure what's wrong with the t-con then (if anything).
            Just out of curiosity - was VEEG 7V or -7V when you measured it?

            Comment

            • OncleOh
              Member
              • Dec 2011
              • 16

              #26
              Re: Samsung Synchmaster 2693HM WHITE SCREEN

              @momaka
              yes the VEEG is -7V, is these ok or wrong?

              Regards!
              Leo

              Comment

              • OncleOh
                Member
                • Dec 2011
                • 16

                #27
                Re: Samsung Synchmaster 2693HM WHITE SCREEN

                Hi,
                i took a look at the pdf and the VEEG in -V so the T-con is ok.
                Why then white screen?

                Regards!
                Leo

                Originally posted by OncleOh
                @momaka
                yes the VEEG is -7V, is these ok or wrong?

                Regards!
                Leo

                Comment

                • momaka
                  master hoarder
                  • May 2008
                  • 12170
                  • Bulgaria

                  #28
                  Re: Samsung Synchmaster 2693HM WHITE SCREEN

                  The voltages are right.
                  My only guess would be if the video signals are somehow not getting to the t-con board or if the video/logic board is not sending any. That's a bit above my level of troubleshooting expertise, though.
                  Perhaps just check the other small ceramic caps for short circuit. If none, I don't know what else to suggest.

                  Comment

                  • OncleOh
                    Member
                    • Dec 2011
                    • 16

                    #29
                    Re: Samsung Synchmaster 2693HM WHITE SCREEN

                    @momaka
                    will check all the caps and let you know.
                    Thanks for now.

                    Regards!
                    Leo

                    Comment

                    • Chris02
                      New Member
                      • Jan 2012
                      • 9
                      • Germany

                      #30
                      Re: Samsung Synchmaster 2693HM WHITE SCREEN

                      Everything about my fix of 2693HM you can find in this thread

                      OncleOh asked me if I can measure the testpoint from my working t-con board. Here are the calues of the working one.

                      Name of Testpoint Voltage / Resistance to GND
                      VDDG 27V / 100k
                      VEEG -7V / 41,5k
                      VDDA 13V / ~5,5k (it seems that the TP is connected to any C which charged while measuring)


                      I hope it will help anyone to fix much more 2693hm!


                      Regards from Germany
                      Chris

                      Comment

                      Related Topics

                      Collapse

                      • harp
                        White screen repairs
                        by harp
                        To ask here... I have few devices with white screen problem, actualy nokia 2220 and some fuji? camera, and try to understand what is common problem to cause that issue.
                        Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
                        On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment...
                        05-13-2024, 03:43 AM
                      • Chrissygizmo
                        samsung galaxy ao2s very temperamental after screen replaced
                        by Chrissygizmo
                        Hi , I've recently replaced the screen in my Samsung galaxy ao2s, at first it wouldn't even turn on, it had the charging symbol on the screen when plugged in but the green circle wasn't going around to show it charging....
                        Ive eventually managed to get it on and working but it's very temperamental...

                        The battery icon always reads as 50% , when the phone goes into lock screen mode i sometimes can't get the screen back on unless I plug the charger in to get it to light up, also it keeps putting the camera app on.. u think it could be something to do with the side buttons. ...
                        05-26-2024, 12:05 AM
                      • Kiberge
                        Samsung LH82QENELGC/EN Help needed - Static line on screen
                        by Kiberge
                        HI guys!

                        I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
                        I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊

                        the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.


                        This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when...
                        04-22-2024, 11:28 AM
                      • Ryan.man
                        Macbook 2017 with touchbar (A1706) won't turn on after removing the screen
                        by Ryan.man
                        Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!

                        My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.

                        This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
                        02-04-2025, 12:23 PM
                      • aczelkri
                        Samsung LE37B650 white screen
                        by aczelkri
                        Hey guys,

                        I have a Samsung LE37B650 screen with the following symptoms:

                        - Image suddenly turned into almost completely white while I was watching a movie. I can make out some details, but they are very faint. There is definitely an image there, but very very bright and maybe inverted colors.


                        - If I unplug the cable between the main panel (that has all the video in-out ports) and the tcon board (T315HW02 V3 CTRL BD 31T06 C03), the screen is black as normal (there is backlight and it is masked by the pixels), but of course there is no actual...
                        10-14-2020, 05:10 PM
                      • Loading...
                      • No more items.
                      Working...