VOGONS

Boards that are power fussy

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First post, by Mau1wurf1977

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So I got another BX440 slot 1 motherboard. Caps are fine, visual inspection is fine, looks to be in good condition. Insert a CPU, some RAM and a AGP video card and turn it on. PSU fan just spins for a moment then shuts down.

I reseat everything a few times. Just before declaring it DOA I try another PSU and it comes to life.

The PSU that it doesn't POST with is a quality XFX 450W. The PSU it POSTs with is a Gigabyte 420W that comes with Gigabyte cases.

While I'm happy that the board is working I'm wondering why the XFX shuts off. Is there some test a PSU performs before it fully power on?

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Reply 1 of 4, by luckybob

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my money is on a missing "pwr good" wire and or 3.3v sense lead. or the motherboard in question does NOT supply a pwr good signal, thus telling the "quality" psu to turn off where the gigabyte one doesnt care.

Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them. - Reverend Mother Gaius Helen Mohiam

Reply 3 of 4, by Logistics

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Is it a server board? Seems like my server boards often take a long time to post compress to the majority of regular desktop boards.

Reply 4 of 4, by Mau1wurf1977

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The board features jumper less configuration so maybe that's why. However after mucking around a bit more, it now starts also with the XFX PSU. Weird.

I got two identical boards coming and will see if they behave the same or not.

My website with reviews, demos, drivers, tutorials and more...
My YouTube channel

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