Viewsonic VA1918wm Problem

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  • darkbyte23
    New Member
    • Jun 2011
    • 6
    • Saudi Arabia

    #1

    Viewsonic VA1918wm Problem

    My default setting for the brightness is 100 before. Now it just black out the power led is turned blue, but when i lowered the brightness to around 80% it the display shows and does not go black. If I set the brightness again to 100% I can hear a click sound and then black out. What seem to be a the problem? Thanks in advance for any reply.
  • retiredcaps
    Badcaps Legend
    • Apr 2010
    • 9271

    #2
    Re: Viewsonic VA1918wm Problem

    The standard procedure here is to post clear focused pictures of all your boards using the manage attachments functions so the pictures are attached to this forum. Please do not post inline because it slows down the loading of pages.

    After you have posted the pictures using manage attachments, we can suggest test points or see if the caps are known bad series.
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    If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

    We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

    Please do not post inline and offsite as they slow down the loading of pages.

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    Comment

    • darkbyte23
      New Member
      • Jun 2011
      • 6
      • Saudi Arabia

      #3
      Re: Viewsonic VA1918wm Problem

      sorry for that finally have the guts to disassemble the unit here is the power board
      Attached Files

      Comment

      • Th3_uN1Qu3
        Believe in
        • Jul 2010
        • 6031
        • Romania

        #4
        Re: Viewsonic VA1918wm Problem

        You have one obviously bulging capacitor right next to that heatsink in the middle. What does it say on it?

        Also please update your profile with your location so we can suggest a parts distributor in your area.
        Originally posted by PeteS in CA
        Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
        A working TV? How boring!

        Comment

        • retiredcaps
          Badcaps Legend
          • Apr 2010
          • 9271

          #5
          Re: Viewsonic VA1918wm Problem

          Originally posted by Th3_uN1Qu3
          What does it say on it?
          My guess from the pics is a Samxon GF which is a problematic series.
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          If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

          We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

          Please do not post inline and offsite as they slow down the loading of pages.

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          Comment

          • Th3_uN1Qu3
            Believe in
            • Jul 2010
            • 6031
            • Romania

            #6
            Re: Viewsonic VA1918wm Problem

            Mine too... but let's wait for confirmation.
            Originally posted by PeteS in CA
            Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
            A working TV? How boring!

            Comment

            • darkbyte23
              New Member
              • Jun 2011
              • 6
              • Saudi Arabia

              #7
              Re: Viewsonic VA1918wm Problem

              Sorry for the late reply, it says 1000μF25V GK(M) SAMXON. Any suggestion for replacement
              Last edited by darkbyte23; 06-18-2011, 03:48 AM.

              Comment

              • Th3_uN1Qu3
                Believe in
                • Jul 2010
                • 6031
                • Romania

                #8
                Re: Viewsonic VA1918wm Problem

                This.
                Originally posted by PeteS in CA
                Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                A working TV? How boring!

                Comment

                • darkbyte23
                  New Member
                  • Jun 2011
                  • 6
                  • Saudi Arabia

                  #9
                  Re: Viewsonic VA1918wm Problem

                  thank you very much, hope i can find this in Saudi Arabia

                  Comment

                  • darkbyte23
                    New Member
                    • Jun 2011
                    • 6
                    • Saudi Arabia

                    #10
                    Re: Viewsonic VA1918wm Problem

                    Finally my unit is alive again . Thank you for all your help. Even though i don't have background in electronics, i manage to fix my Monitor.
                    Attached Files

                    Comment

                    • nawazak
                      New Member
                      • Apr 2012
                      • 3
                      • Pakistan

                      #11
                      Re: Viewsonic VA1918wm Problem

                      hi, darkbyte23.... kindly can you guide my how did you dismantle your monitor. thanks

                      Comment

                      • retiredcaps
                        Badcaps Legend
                        • Apr 2010
                        • 9271

                        #12
                        Re: Viewsonic VA1918wm Problem

                        Originally posted by nawazak
                        hi, darkbyte23.... kindly can you guide my how did you dismantle your monitor. thanks
                        Pry it apart similar to this video.

                        http://www.youtube.com/watch?v=Ul5LhuCT1y8
                        --- begin sig file ---

                        If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                        We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                        Please do not post inline and offsite as they slow down the loading of pages.

                        --- end sig file ---

                        Comment

                        • nawazak
                          New Member
                          • Apr 2012
                          • 3
                          • Pakistan

                          #13
                          Re: Viewsonic VA1918wm Problem

                          Originally posted by retiredcaps
                          Pry it apart similar to this video.

                          http://www.youtube.com/watch?v=Ul5LhuCT1y8
                          very nice..... .... thanks a lot. i have got it open.

                          Comment

                          • darkbyte23
                            New Member
                            • Jun 2011
                            • 6
                            • Saudi Arabia

                            #14
                            Re: Viewsonic VA1918wm Problem

                            after 1 1/2 year i have problem again with my monitor. I have to recap the marked one.

                            680uF 25V 105 Degree 1 pc
                            470uF 25V 105 Degree 2 pcs
                            1000uF 25V 105 Degree 1 pc

                            Hope i can relive it again
                            Attached Files

                            Comment

                            • selldoor
                              Slow Learner
                              • Dec 2010
                              • 7870

                              #15
                              Re: Viewsonic VA1918wm Problem

                              Hmm that is why we usually recommend changing all caps - if one has gone others follow
                              hopefully you havent caused damage/weakness to other components by leaving them.
                              Please update profile with country and voltage
                              Please upload pictures using attachment function when ask for help on the repair
                              http://www.badcaps.net/forum/showthread.php?t=39740

                              Comment

                              • retiredcaps
                                Badcaps Legend
                                • Apr 2010
                                • 9271

                                #16
                                Re: Viewsonic VA1918wm Problem

                                Originally posted by selldoor
                                Hmm that is why we usually recommend changing all caps
                                --- begin sig file ---

                                If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                                We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                                Please do not post inline and offsite as they slow down the loading of pages.

                                --- end sig file ---

                                Comment

                                • jaidiaz
                                  New Member
                                  • Nov 2012
                                  • 3
                                  • philippines

                                  #17
                                  Re: Viewsonic VA1918wm Problem

                                  is the lcd panel for this monitor has 55pins?

                                  Comment

                                  • jfriends24
                                    New Member
                                    • Mar 2010
                                    • 3

                                    #18
                                    Re: Viewsonic VA1918wm Problem

                                    Hi there! Can someone here post the body marking of R812 and R807 located at the bottom of the PCB? thanks in advance!

                                    Comment

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