when you short green to black wire
what can be the cause, what to check(caps look ok)?

poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.

On Aug 19, 11:39*am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?

What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? *Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.

probing the disconnected plug-green and red(5v) both 0 volts!

poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.

probing the disconnected plug-green and red(5v) both 0 volts!

Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

spamme0 wrote:

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

I have seen many P/S that do not conform to
the color code.

On Aug 20, 9:43*am, spamme0 wrote:
poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? *Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.

probing the disconnected plug-green and red(5v) both 0 volts!

Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red *It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

On Thu, 20 Aug 2009 10:41:59 +0000 (UTC), root
wrote:

spamme0 wrote:

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

I have seen many P/S that do not conform to
the color code.

And I have seen PSUs (Dell !) that don't even comply with the
pinout code :-)

--
Kind regards,
Gerard Bok

poster wrote:
On Aug 20, 9:43 am, spamme0 wrote:
poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.
probing the disconnected plug-green and red(5v) both 0 volts!
Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

Not strange..."BROKE".
You ain't gonna get nowhere until you get some volts
on the green wire.

Google is your friend, befriend google.
atx "power supply" schematic

On 20 ÐÒÓ, 15:51, spamme0 wrote:
poster wrote:
On Aug 20, 9:43 am, spamme0 wrote:
poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? *Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.
probing the disconnected plug-green and red(5v) both 0 volts!
Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red *It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

Not strange..."BROKE".
You ain't gonna get nowhere until you get some volts
on the green wire.

Google is your friend, befriend google.atx"power supply" schematic- ÁÐÚàØø ÝÐÒÕÔÕÝØ ÕÚá -
I think it is safer to try draw the schematics
update
double checked purple and green both 5v,yellow~0.5v and the rest
0volts

poster wrote:
On 20 ÐÒÓ, 15:51, spamme0 wrote:

poster wrote:

On Aug 20, 9:43 am, spamme0 wrote:

poster wrote:

On Aug 19, 11:39 am, spamme0 wrote:

poster wrote:

when you short green to black wire
what can be the cause, what to check(caps look ok)?

What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.

probing the disconnected plug-green and red(5v) both 0 volts!

Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

Not strange..."BROKE".
You ain't gonna get nowhere until you get some volts
on the green wire.

Google is your friend, befriend google.atx"power supply" schematic- ÁÐÚàØø ÝÐÒÕÔÕÝØ ÕÚá -
I think it is safer to try draw the schematics

update
double checked purple and green both 5v,yellow~0.5v and the rest
0volts

The green must be connected to COM before the supply starts. The purple
is just a always on and it seems it's working.
Just connect the green to black, and put a small load on one of lets
say one of the RED wires (5 Volts).

Jamie t wrote:

The green must be connected to COM before the supply starts. The purple
is just a always on and it seems it's working.
Just connect the green to black, and put a small load on one of lets
say one of the RED wires (5 Volts).



The loading is very important, the PS won't stay on for more than
a few seconds without a load. When I use a standalone PS I
hang an old disk drive on it.

poster wrote:
On Aug 20, 9:43 am, spamme0 wrote:
poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.
probing the disconnected plug-green and red(5v) both 0 volts!
Grounding the green pin won't do anything if there's no voltage
to begin with.

The "always-on 5V" ain't red It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

Open up your PSU & look for a blown fuse.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------

On Aug 21, 5:05*am, Bob Larter wrote:
poster wrote:
On Aug 20, 9:43 am, spamme0 wrote:
poster wrote:
On Aug 19, 11:39 am, spamme0 wrote:
poster wrote:
when you short green to black wire
what can be the cause, what to check(caps look ok)?
What's the open-circuit voltage on the green wire?
What's the voltage on the "always-on" 5V wire? *Forget what
color it is.
I assume you've disconnected the 20-pin plug and the 4-pin
processor 12V plug and the disk drive plugs and the video
card plug to isolate shorts.
probing the disconnected plug-green and red(5v) both 0 volts!
Grounding the green pin won't do anything if there's no voltage
to begin with.

checked diodes and resistors with power off-ok,capacitors visually
look ok.
when you connect green to ground the fan starts spinning briefly
(1/10sec),
is there a generic 300-400w atx schematic someplace because google-ing
as "Rexpower" did not help
The "always-on 5V" ain't red *It's purple.

http://pinouts.ru/Power/atxpower_pinout.shtml

all 0v
strange

Open up your PSU & look for a blown fuse.

--
* * W
* . | ,. w , * "Some people are alive only because
* *\|/ *\|/ * * it is illegal to kill them." * *Perna condita delenda est
---^----^---------------------------------------------------------------