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Old 07-12-2007, 04:18 PM   #1
mrspangle
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Join Date: Sep 2003
Posts: 40
M2-ATX - Very very weird problems

Hi,

Just purchased an M2 ATX as my Opus 150w of 4 years died on me last week!

Now this is the scenario i've got:

- M2-ATX hooked up to a bench DC unit outputting 13.8 v
- The molex out of the M2 is connected to a splitter
- One goes to a laptop hardrive which only uses the 5v rail and one ground
- The other molex goes to my DW5200 2 din screen (12v rail and one ground)

If I do the following:

Have both the hardrive and monitor connected:
Power up - CPU fan kicks in, computer LED's on - no POST from computer

Disconnect the monitor:
Power up - computer POST's and starts normally

Disconnect the laptop hardrive
Power up - Monitor switches on and is fully functional


I mean WTF? My amp reading on the bench DC is never more than 5amps with both connected.

According to the manual the M2 should be able to take 8a on the 12v alone - but the only device that uses the 12v rail is the monitor. The laptop drive only uses the 5v rail.

I have verified all outputs are reading the right voltages.

What on earth is the matter?

John
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