Kevin,

Thanks for the reply...

On Mon, 13 Nov 2006 20:23:33 -0500, Kevin Timmerman wrote:

> I just checked a system with an Antec power supply. It drops to 25 mV 
> within a few seconds and stays there.  The 12V drops right down to zero.

Hmmm... maybe I should get one of theirs.  I seem to remember they do make decent-quality PSUs...
 
> Have you tried a small resistor on the 5V line?  100 ohm 1/2 W would 
> be a good start.

No, I didn't think load was the problem.  I didn't make it clear in my original post, I'm installing this in a PC *with the rest of the PC still there*!  I'd 
have thought that the motherboard, two hard drives, floppy drive, and three DVD writers would provide a load at least this big, wouldn't they?  Or 
would the low voltage mean that they'd be effectively high resistance?  (I have no idea what ICs "do" when the voltage falls way below spec.)

I'll try your suggestion and see what happens.

Cheers,



Howard Winter
St.Albans, England


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