have you tried it with a normal computer power supply? and if your handy with a mulimeter I believe there is a fuse near the power connector on the motherboard, you might check that as well.
It will need ram to POST from past experience.
Just disconnect the opus from the battery for 5 seconds.
good idea. i should try that also.
anyway it could be a dead battery on the mobo?
Removing the fuse in the Opus is what he means by resetting it. Seems to be common with Opus P/S's.
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i had no idea there was a fuse in the opus.
So i open the opus up and remove the fuse then put it back in?