Dell E153FPT No Backlight

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  • doctervr6
    New Member
    • Sep 2009
    • 4
    #1

    Dell E153FPT No Backlight

    Hello, newbie here looking for some help from you gurus.

    I have a Dell E153FPT that recently stopped working. When I power it up, it briefly shows a nice display then blanks out after 1 second. I still have green lights etc.
    Here I a picture of the board.
    Where do I start? Any help would be greatly appreciated.



    darkchild
    Tags: None
    • Bobdee
      Badcaps Veteran
      • Jun 2008
      • 461
      #2
      Re: Dell E153FPT No Backlight

      Hello
      Not sure about that cap left and lower edge of yellow transformer, looks bulged on the top if it is then replace, might pay to recap the power/supply leaving out the 450V 100uf cap as they rarely fail
      Check all solder joints on the board with a good magnifying glass, paying particular attention to inverter area, resolder any bad joints or ring cracks
      If that dont do it then your CCFLs must be suspect

        Comment

        • doctervr6
          New Member
          • Sep 2009
          • 4
          #3
          Re: Dell E153FPT No Backlight

          you are correct, it is bulged. took it out and it tested bad. bad news is that is 1000uf 16v, I can only find a 1000uf 35v. would that work or will I need the exact match?

            Comment

            • Bobdee
              Badcaps Veteran
              • Jun 2008
              • 461
              #4
              Re: Dell E153FPT No Backlight

              I think there is no problem going to the 35v to test but replace it with a 16v when you can, as you probably know it is going under voltage that is the No No
              Hope someone will come in and confirm this please

                Comment

                • lucky13
                  Badcaps Veteran
                  • Aug 2007
                  • 412
                  #5
                  Re: Dell E153FPT No Backlight

                  Originally posted by doctervr6
                  you are correct, it is bulged. took it out and it tested bad. bad news is that is 1000uf 16v, I can only find a 1000uf 35v. would that work or will I need the exact match?
                  doctervr6,

                  Can you post the markings on the orignial cap?

                  Also markings on your intended replacement 1000uF/35V.

                  I have a feeling this should be low ESR cap.

                    Comment

                    • doctervr6
                      New Member
                      • Sep 2009
                      • 4
                      #6
                      Re: Dell E153FPT No Backlight

                      sorry for the delay, I was able to repair the monitor by replacing the said cap. I replaced it with a cap with the same specs. thanks again you guys are the best.

                        Comment

                        • tmwalsh
                          Senior Member
                          • Jan 2009
                          • 119
                          #7
                          Re: Dell E153FPT No Backlight

                          Bobdee, I thought that you could go 'over voltage' spec without problem, but should at all times replace with the same capacitance in whatever size farad... I thought the voltage spec was indicating the operating voltage, and that the cap would not burn through as long as you stayed under that spec.
                          tom

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