On 3/2/2006 at 1:26 AM ard at p850ug1.demon.co.uk wrote:
Last resort is
popping the box open and checking the ground plane on the
PCB or any of the ICs (if the ground plane is buried) against the
connector.
That's the one I do first. Why 'as a last resort'?
If this were a desktop system, I'd go for the screwdriver first. However,
on portable systems, reassembly can sometimes get a little involved--at
least for my "all thumbs" hands!
Let's not forget that the original poster knows that the PSU puts out
+18vdc. It's EXTREMELY unlikely that the positive side of the PSU has a
direct connection with any signal pin!
Cheers,
Chuck