Failing Dell 525W power supply question

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  • Half-Saint
    Badcaps Veteran
    • Jan 2010
    • 213
    • Slovenia
    #1

    Failing Dell 525W power supply question

    Hi,

    I have a failing Dell power supply (from a Dell Precision T3400 desktop PC) with one confirmed (visibly bulging) bad capacitor marked 3300uF 16V LZP. All the other caps are Rubycon, this one is the only one that's not. Anyway, here's a potentially stupid question. Can I replace it with a 2200uF 16V low ESR cap? I know that in general this isn't recommended but if it's just a filtering cap, it could work? I can't provide a proper photo of the board because it's all cramped up and hard to get a good angle. If you guys think it might help, I can do my best to take some photos anyway.

    Cheers,
    H-S
    Last edited by Half-Saint; 05-12-2020, 02:18 PM.
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 31248
      • Albion
      #2
      Re: Failing Dell 525W power supply question

      no, what size is the cap?

        Comment

        • hartonoh
          New Member
          • Apr 2020
          • 4
          • Indonesia
          #3
          Re: Failing Dell 525W power supply question

          LZP elcap is a very low esr elcap, 22miliohm from the specification. If you change it with lower value, the esr will be higher, and the filtering action will be worse. I thing it will work with much more ripple, not a good solution

            Comment

            • Half-Saint
              Badcaps Veteran
              • Jan 2010
              • 213
              • Slovenia
              #4
              Re: Failing Dell 525W power supply question

              Originally posted by stj
              no, what size is the cap?

              It's quite large: 3 x 1.25 cm

              I'm looking at Rubycon 3300uF 16V ZL series as a replacement. It's slightly taller at 3.5 cm but same diameter.

                Comment

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