Dell 2408 power problem

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  • cacvn
    New Member
    • Dec 2015
    • 3
    • vn
    #1

    Dell 2408 power problem

    Hi everybody,
    I have a Dell 2408 with this problem: everytime when I turn on the monitor, the power led doesn't go on. I have to unplug the power cord and then pluggin, and repeat 3 or 4 time, after that the monitor works well. But after not use about half an hour, the same thing happened.
    I changed two caps 47mf/50v and the IC KA431 from another power supply board of a Dell 2047 (This Dell 2407 is working, only one thing that I cannot access the menu).
    Can anyone help me ? Thanks a lot.
    Tags: None
    • gipiv
      Member
      • Nov 2009
      • 12
      • Italy
      #2
      Re: Dell 2408 power problem

      Hi,
      I am in very much the same situation, but I haven't changed anything yet. I tried some simple measurements and it seems D701 and D703 "seem" to be faulty, so I will try to change them .
      Have you taken any readings?

        Comment

        • momaka
          master hoarder
          • May 2008
          • 12170
          • Bulgaria
          #3
          Re: Dell 2408 power problem

          I suggest you post pictures of YOUR board so we can suggest what to check.

          In general, when a switching power supply (be it from a monitor, computer, or just a stand-alone power adapter) starts only when warm, it's very likely the caps are the issue.

            Comment

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