Ewan Sinclair wrote:

There are two capacitors in the PS that are charged to about 320 V DC (in
series).
These each have "bleeder" rsistors, to insure that they will discharge in
a few
minuites. Actually, about five minutes should be enough for them to
discharge
to a very safe value. If you're really paranoid, unplug it overnight.

Does it discharge best when unplugged, or does it like to have a ground wire
to bleed down? if so, should I leave the little switch on the back on, or
off?

Be careful you don't burn yourself if soldering the fan wires!

Heh, thanks for the warning :-)

Ewan

See kony's posting for some actual numbers. The bleeder resistors are
directly across each capacitor. It matters not what you do externally.
By the time you get the PS out of the case, and the cover removed, the
voltage will be low enough.

Even with open bleeder resistors, electrolytic capacitors have an internal
shunt resistance that would not let them hold a charge for "days" as the
rumors go. The most dangerous voltage in most electronic equipment is
the line voltage. In the old AT power supplies, it was brought right
up front in the computer case. Even before you've unpluged an ATX PS
there are no dangerous voltages in the case.

Be careful of sharp edges!;-)

Virg Wall
--
A foolish consistency is the
hobgoblin of little minds,........
Ralph Waldo Emerson
(Microsoft programmer's manual.)