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Thread: 12V PSU fuse keeps blowing when connected..

  1. #1
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    Sep 2005
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    12V PSU fuse keeps blowing when connected..

    Hi. I have a Mini-itx Epia M10000 mobo system in my boot, with a 12V DC-DC PSU connected to the battery. I have checked the voltage (with my limited knowledge of electronics) and it seems to be 12V when the engine is off. It has worked fine for weeks, but I took the mobo and HDD out yesterday to install something in the house, put it back in today, and whenever I connect the Positive and Switch terminals, the fuse blows. This happens immediately.
    Is there something I am missing? I checked for loose screws, and it worked perfectly until I put my board back in this morning.
    Thanks

  2. #2
    MySQL Error MatrixPC's Avatar
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    Get a BIG magnifier out and see if there is any shorted to the board/PSU and the power cable between PC/PSU-batt and IGN-PSU/PC.
    On the PSU side, check for continueity between the car chasic/ground and the + inputs (bat and IGN.).
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  3. #3
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    Sep 2005
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    I had a look and everything looks ok. Its an M1 ATX PSU.
    Its doing my head in! Thats 3 fuses blown already.

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