Dell XPS 400 one lone Heremi and uf change?

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  • SheDevil
    New Member
    • Oct 2005
    • 8
    • USA
    #1

    Dell XPS 400 one lone Heremi and uf change?

    It is in a row/cluster of 5 other small caps of 2-220 16v, 3-470 6.3v, all YXG series. Reason being Digikey had only these close to origonal ripple spec.

    Question is, can they be upped on the uf? After reading the other Dell threads, that they must have put that uf there for a reason, I'd like some opinion on the matter. I'll try to post a pic of the board shortly.

    Old cap
    1-LZ series
    100uf 16v
    6.3x7
    Ripple 360
    imp .13-.52

    1- FM Panasonic
    120uf 16V
    Ripple 455mA
    130 mOhm
    6.30x11.20
    EEU-FM1C121
    ----------------
    Other uf being questioned

    Old cap
    2-KZJ UCC (bulging)
    1800uf 6.3v
    10x16
    Ripple 2460
    imp 0.0125

    Replaced with
    2-FM Panasonic
    2200uf 6.3V
    10x25
    Ripple 2.47A
    18 mOhm
    EEU-FM0J222L
    -------------
    Old cap
    2-MBZ rubycon
    1500uf 16V
    10x20
    Ripple 2550
    ESR 13

    Replaced with
    2-HM nichi
    1800uf 16v
    10x25
    Ripple Current 2.8A
    Impedance 12 mOhm
    UHM1C182MPD-ND

    Most I know is that oviously caps around the CPU are probably for that circuit, but aside from that I am clueless. And all the caps around the CPU are poly's. 560uf 4v

    All others on the board are getting replaced also, no matter there brand, just because the fans to the system were filled with %$@&, and knowing the friend it came from probably ran in summer months with no air flow or a/c for 4-5 yrs.
    Will be checking the PSU due to heat also.


    Since there are very few threads I have found on a XPS 400 I'm including a list of all caps being replaced and how many.
    Old cap
    4-KZJ UCC
    1800uf 6.3v
    8x20
    Ripple 2350
    IMP 0.012

    Replaced with
    4-HZ Nichi
    1800uf 6.3v
    8x20
    Ripple 2.88A
    9 mOhm
    UHZ0J182MPM6
    --------------
    Old cap
    6-MBZ rubycon
    820uf 6.3v
    8.3x11.5
    Ripple 1140
    ESR 36

    Replaced with
    6-FM Panasonic
    820uf 6.3v
    8x15
    Ripple Current 1.24A
    Impedance 41 mOhm
    EEU-FM0J821L
    --------------
    Old cap
    4-HM nichi
    680uf 16v
    10x12
    Ripple 1.54mA
    Impedance 25 mOhm

    Replaced with
    4-FM Panasonic
    680uf 16v
    10x16
    Ripple 1.79A
    Impedance 26 mOhm
    EEU-FM1C681
    --------------
    Old cap
    3-KZG UCC
    470uf 16V
    8X11.5
    Ripple 1140mA
    0.036

    Replaced with
    3-FM Panasonic
    470uf 16v
    8X15
    Ripple 1.24A
    Impedance 41 mOhm
    EEU-FM1C471L
    --------------
    Old cap
    17-YXG rubycon
    470uf 6.3V
    6.3X11
    Ripple 340mA
    imp .22 - .87

    Replaced with
    17-LXZ UCC
    470uf 6.3V
    6.3x15
    Ripple 400mA
    Imp 180 mOhm
    ELXZ6R3ELL471MF15D
    --------------
    Old cap
    6-VR nichi
    220uf 16v
    6.3x11
    Ripple 260mA
    -
    85c

    Replaced with
    6-FR Panasonic
    220uf 16v
    6.3x11.2
    Ripple 455mA
    Impedance 130 mOhm
    105c
    EEU-FR1C221
    --------------
    Old cap
    4-YXG rubycon
    220uf 10v
    6.3x11
    Ripple 340mA
    imp .22

    Replaced with
    4-FR Panasonic
    220uf 10v
    6.3x11.2
    Ripple 455mA
    Impedance 130 mOhm
    EEU-FR1A221

    Thanks for any help on the matter.
    Tags: None
    • brethin
      Badcaps Legend
      • Dec 2008
      • 1907
      • USA
      #2
      Re: Dell XPS 400 one lone Heremi and uf change?

      Does it work after all the replaced caps? Changing the uf isn't a yes or no question as long as you don't change them alot. Without reading all your post if the replacement caps have = to or higher ripple and = to or lower ESR and are close to the same uf and are the right voltage for for the circuit and are 105c are higher you should be fine.

        Comment

        • SheDevil
          New Member
          • Oct 2005
          • 8
          • USA
          #3
          Re: Dell XPS 400 one lone Heremi and uf change?

          I'm still in the process of recapping it, and had to reorder some 220uf since I miscalculated. I have read that also, it is just sometimes you never know.

          So any way here is the pic of the board with the location of the caps just incase.


          Thanks
          Attached Files

            Comment

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