Help Dell E173fpb 17inch monitor

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  • mastercare
    New Member
    • Sep 2010
    • 5
    #1

    Help Dell E173fpb 17inch monitor

    Hi all just joined the forum after some help if anyone knows what this problem may be...
    i aquired this monitor about a year ago from our local landfil site it was dead anyway thanks to the internet found that the 2 pairs of invertors can go short so i repl all 4 ...bingo all worked fine...component ref q740 q760 q739 q759..

    problem now very different it will switch on fine and work some times for 10 mins sometimes for hours but then it just goes off. we found if we unplug the mains for a short while it then powers up again fine. there is no standby light its just as if you have pulled the mains. i am checking caps for bulges etc but no luck there has anyone had these symptons or could suggest a fix,,
    many thanks agn
    Tags: None
    • seanc
      Badcaps Legend
      • Nov 2008
      • 1319
      #2
      Re: Help Dell E173fpb 17inch monitor

      Do the standby and power led work correctly during the time the monitor is working?

      Sounds like the PSU is shutting down because it's detecting a short or you have bad solder joints.

        Comment

        • mastercare
          New Member
          • Sep 2010
          • 5
          #3
          Re: Help Dell E173fpb 17inch monitor

          hi thanks for reply..
          yes power etc works fine while monitor is behaving...at mo just soldered some joints and dell test logo is bouncing around the screen..
          i will leave it on and see what happens..
          thanks again..

            Comment

            • retiredcaps
              Badcaps Legend
              • Apr 2010
              • 9271
              #4
              Re: Help Dell E173fpb 17inch monitor

              Originally posted by mastercare
              at mo just soldered some joints and dell test logo is bouncing around the screen..
              You *must* resolder all the inverter transformer (the 4 yellow boxes that start with a "T") pins for Benq power/inverter boards. If you don't, it will cause the c5707 transistors and the picofuse to possibly go bad or cause symptoms like what you are seeing.
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                Comment

                • mastercare
                  New Member
                  • Sep 2010
                  • 5
                  #5
                  Re: Help Dell E173fpb 17inch monitor

                  Originally posted by retiredcaps
                  You *must* resolder all the inverter transformer (the 4 yellow boxes that start with a "T") pins for Benq power/inverter boards. If you don't, it will cause the c5707 transistors and the picofuse to possibly go bad or cause symptoms like what you are seeing.
                  thanks for the information, i have soldered all the pins on the transformers and so far so good, its been running now for about 4 hours so i will see how it goes..
                  many thanks guys.

                    Comment

                    • kc8adu
                      Super Moderator
                      • Nov 2003
                      • 8829
                      • U.S.A!
                      #6
                      Re: Help Dell E173fpb 17inch monitor

                      resolder the grey box caps and the 5707's too

                        Comment

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