How do I test a Power Supply?

  • Thread starter Thread starter Lyn
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Lyn

I got a new Antec PS. But when I plug it in
(with nothing connected to it) it doesn't seem to
run (the fan doesn't turn and there is no dc voltage
on some of the leads). Is it dead or does it require
a connection to a motherboard to work???

Thanks
 
Lyn said:
I got a new Antec PS. But when I plug it in
(with nothing connected to it) it doesn't seem to
run (the fan doesn't turn and there is no dc voltage
on some of the leads). Is it dead or does it require
a connection to a motherboard to work???
Click to expand...

It requires the green wire on the big power connector (has 20 or 24
pins) to be grounded to one of the black wires (any will do, even
others on the same connector). Most people use a bent paperclip to
short them together.

BTW don't bother buying a PSU tester because it will say that a PSU is
fine even if one of its voltages is so way off that the computer won't
run. In my case a tester from CompUSA did this even though the +12V
rail was too low to make the disk drives spin. For the same money you
can buy a cheap digital multimeter that will be a lot more accurate and
useful for testing many other things as well.
 
Lyn said:
I got a new Antec PS. But when I plug it in
(with nothing connected to it) it doesn't seem to
run (the fan doesn't turn and there is no dc voltage
on some of the leads). Is it dead or does it require
a connection to a motherboard to work???
Click to expand...

You may notice that the power button is on the case and connected to the
motherboard so, yes, the PSU normally needs to be connected to the
motherboard to turn it on.

You can power it up separately by connecting the green wire to ground
(black) but it also needs a minimum load to regulate properly. I keep an
old junker hard drive to plug into them for that purpose.
 
the sneering said:
I got a new Antec PS. But when I plug it in
(with nothing connected to it) it doesn't seem to
run (the fan doesn't turn and there is no dc voltage
on some of the leads). Is it dead or does it require
a connection to a motherboard to work???
Click to expand...

Plug the power supply into the mains. Drop your knickers, squat over the
vents and piss into it.

PS: Do you suck cock? Do you swallow?

--
 
I got a new Antec PS. But when I plug it in
(with nothing connected to it) it doesn't seem to
run (the fan doesn't turn and there is no dc voltage
on some of the leads). Is it dead or does it require
a connection to a motherboard to work???
Click to expand...
Read up about Switch Mode PSUs - they need a load to run


--
Conor

If Pac-Man affected us as kids, we'd all be running around in darkened
rooms, munching magic pills and listening to repetitive electronic
music.
 
David said:
You can power it up separately by connecting the green wire to ground
(black) but it also needs a minimum load to regulate properly. I keep an
old junker hard drive to plug into them for that purpose.
Click to expand...

Hmm! Good idea.
 
Thanks to all (except for the one jerk). I did as you said and it does
read the correct voltage now but the fan still doesn't turn. Is it normal
for a Antec SL300S to not turn on fan until hot??
Thanks
 
Lyn said:
Thanks to all (except for the one jerk). I did as you said and it does
read the correct voltage now but the fan still doesn't turn. Is it normal
for a Antec SL300S to not turn on fan until hot??
Thanks
Click to expand...

Which fan? (I missed something?) I would think th eprocessor fan would
be going all th etime, dont try if it does not. Other fans may be on off
temperature controlled maybe?
 
the word-blind said:
Ahh, JAD, I have seen this kind of bitterness before. It was in
people who had
suffered serious losses - like the use of their limbs. They handle
the pain with a
"shocking" and obscene kind of humor which is how they see that life
has treated
them. There is no call for anger in return. Rather, pity and
sympathy (although
they usually hate both!!!) should be used to return kindness for
their ugly comments.
In time, they respond and it is usually with incredible honesty and
open-ness and
warmth. They end up being the kind of people who will do anything
for you (short
of a head job :-).
Click to expand...

LOL

--
 
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