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Thread: PicoPSU 90W problem

  1. #1
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    PicoPSU 90W problem

    Using a NEW PicoPSU-90 with a 12v 5A adaptor.

    Works with an ITX PIII-1.4S with 2GB DDR.
    DOESNT work with Nforce3 SFF motherboard with A-XP at 1.4GHz/1.1V with 2GB DDR.

    Originally, board powered on, fan spun up, did not POST.
    Plugged in old ATX PS, and board did the same thing... Reset the CMOS, and board was happy with the ATX PS. Tried the PicoPSU again, and failure.

    Now, the board is again happy on the ATX supply, but my coils hum in the VREG area

    What's happening with the PicoPSU?

  2. #2
    Variable Bitrate dMand's Avatar
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    looks like you may have overloaded the Pico. When the noise started to appear, were you doing tests with an atx psu on an extension cord out to your car? or did you bring the motherboard in to the house?

  3. #3
    Maximum Bitrate pcpete's Avatar
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    Just for reference, I'm feeding a PicoPSU from a Carnetix 2140 which powers:

    MB: Asus M2A-VM HDMI
    CPU: AMD BE2350 (45W)
    RAM: 2GB
    HD: 5400RPM 120GB 2.5" SATA

    No problems in 1.5 years...

    Can you try the PICO in a different (less power) system? maybe that board and cpu are too much?

    Oh, and it seems you are only providing the pico with 12x5a= 60W, probably not enough juice...

  4. #4
    Variable Bitrate dMand's Avatar
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    Quote Originally Posted by pcpete View Post
    Just for reference, I'm feeding a PicoPSU from a Carnetix 2140 which powers:

    MB: Asus M2A-VM HDMI
    CPU: AMD BE2350 (45W)
    RAM: 2GB
    HD: 5400RPM 120GB 2.5" SATA

    No problems in 1.5 years...

    Can you try the PICO in a different (less power) system? maybe that board and cpu are too much?

    Oh, and it seems you are only providing the pico with 12x5a= 60W, probably not enough juice...
    I'm glad you brought this up because I have no idea what's a "PIII-1.4S".

  5. #5
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    @dMand-
    Pentium III version 1.4GHz for Servers (512K L2)

    Perhaps I'll power the PicoPSU's 12V input from an ATX supply, see if that works with the board.

    To reiterate, the PicoPSU DOES work well with 2 other systems, just not this Athlon one.
    But the Athlon system CANNOT possibly require more than 40W! The processor is clocked and rated at 18W, and I cant image the board requires more than another 20W.

    I have a high-quality 12V 5A adaptor, which should yeild (theoretically) 60W output power.

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