I’m trying to replace the jet engine fan inside the PSU of a Nu 1.1 with a Noctua equivalent and am having trouble identifying the connector. The PSU is a Delta Electronics Model EDPS-250AB A, Part Number 400-5494-91.

I have taken several pictures of the fan connector and its header in the hopes of identifying the connection. I originally thought it was a JST-EH 2.0, but it is not, and the only means of comparison that I currently have.

Photos here: https://imgur.com/a/JQVahV3

Please help!

  • @glarf
    link
    English
    31 year ago

    See if you can swap the connector, those pins can be released if you gently lift the locking tabs and pull the wire away from the connector. The metal connectors from your replacement fan might not fit into the original, but it’s worth a try.

    • @joenforcerOP
      link
      English
      11 year ago

      Thanks for this suggestion! Is there any chance of breaking the connector by doing this? I replied to another commenter, but to emphasize, I am only looking to modify the fan and connector as a last resort because of how rare this equipment is.

      • GVasco
        link
        fedilink
        English
        21 year ago

        Breaking the plastic would be tough so long as you’re not hammering it. The connectors crimped to the wires it’s another issue and if you pull too hard you could get the wire to come off the connector if it isn’t soldered.

      • @glarf
        link
        English
        11 year ago

        Yes you could break the connector if you’re not careful. However at the end of the day, it’s not like you can’t replace both sides of the connector with standard hardware, and at the very worst you could solder the fan to the pins and cover each wire with heat shrink.

    • @joenforcerOP
      link
      English
      31 year ago

      I am trying to be non-destructive since this is a rare piece of equipment. So I would prefer to put in something entirely new in and preserve the original hardware in case something goes wrong.

      • @[email protected]
        link
        fedilink
        English
        11 year ago

        One possiblity would be to cut the original cable and add a new connector to both sides. A female one to the one that goes to the board, and a male one to the one on the fan.

        That way you have all the original parts still there, but you can use the one part of the cable as an adapter.

      • @Cobrachicken
        link
        English
        11 year ago

        Any chance to replace the whole PSU and then going full tilt modifying the replacement? I only see one offer for 400-5494-91 (400€!!) so maybe any other in that form factor? Seems to be mostly standard PC connectors on these, but not sure from the pics I can find.

  • @[email protected]
    link
    fedilink
    English
    11 year ago

    Buy the JST plug with the right pin pitch (in your case 2mm), and grind it so it fits. You can find male to female cables, so you also don’t have to modify the original connector on your noctua fan.