Can I somehow make power supply with a 24 pin connector work with my Aspire XC 1760?

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  • RPHa
    RPHa Member Posts: 4 New User

    OK, after measuring the white and yellow wires in the 6-pin and 4-pin connectors respectively I found them to have a short between them in the original powersupply (as in: all four wires are attached together to the single 12V powerrail.) The 12V is always present when plugged in (powerdraw is 0.0W according to my cheapo socket powermeter (no fan running), whereas the Fractal platinum is 6W when turned on by grounding the PS_ON (fan running at slow speed)).

    The Fractal powersupply needs the PS_ON to be grounded to switch ON the 12V rail. I tested with just the PSU on the table without the computer and pushing the PS-ON terminal (removed from the 24-pin plug) into a ground-socket in the plug. So hopefully it'll work by just attaching it to the mainboard, but if not, I'll rig something up using the 5VSB.

    Will report back.

  • billsey
    billsey ACE Posts: 36,341 Trailblazer

    The motherboard only supports +12VDC power. You do need to deal with the PS_ON as you suggest, but everything else is 12V. There is no provision, or need for, 5V anywhere, since all needed voltages are derived on the MB from the 12V power.

    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.
  • RPHa
    RPHa Member Posts: 4 New User

    I temporarily solved the 'issue' by removing the PS_ON pin from the 6-pin connector (that I removed from the original supply and populated with removed female pins from the 24pin connector) and putting it back in the (unused) 24pin connector and placing a short between the PS_ON and GND. The regular ATX powersupply is now always ON and the casefan and the CPU fan stay on (very low RPM). The GTX2060 fans are OFF when the computer is OFF.

    Next step is getting a boost converter to make 12V out of the 5VSB to supply the MB with 12VSB. That's the last resort I can think of to get this prebuild piece of **** to function as it was intended, short of buying a 12VO powersupply (that seem to be non-existant, I already cut a piece out of the housing to fit a regular ATX so there's no going back the the Aliexpress 550W straight drop-in powersupply).

    Corsair sells a converter lead for (some??? of) their ATX powersupplies which turns it into a 12VO supply. I doubt they have a boostconverter in that lead, so they mush have a 12VSB pin somewhere in their 18 + 10 pin plugs. Maybe I should order one, figure out the wiring and return it ;) And see if my powersupply (also 18 + 10 plug to the 24 plug) also has a 12VSB on the same plug.

    https://www.corsair.com/eu/en/p/pc-components-accessories/cp-8920272/atx12vo-adapter-cable-cp-8920272

  • RPHa
    RPHa Member Posts: 4 New User
    edited July 29

    Or maybe the DO have a boostconverter in their cable…

    Quote from their website:

    Convert a CORSAIR 18+10-pinconnector to a 10-pin ATX12VO, with an in-line circuit for guaranteed ATX12VO motherboard compatibility.

    https://www.corsair.com/eu/en/p/pc-components-accessories/cp-8920272/atx12vo-adapter-cable-cp-8920272