power supply questions


D

dh

Hi,

I work at a night club and we have a lighting control board that
has two mother boards. The other day it wouldn't try to come on
at all, acting like it wasn't getting power. So I made sure it
was getting power, unplugged and plugged it back several times,
and tried starting it several times. Finally after a number of
attempts it started up and ran fine, but a couple of tech people
said it sounds like the power supply is going bad. It has a HIGH
POWER® HPC-360-302 DF power supply. If I remember right it has
five connectors: 1 twenty wire, 3 four wire, and 1 two wire. We
tried replacing it with a newer type from Micro Center, and had
to use an adapter to try to make the two wire connector work. It
looked like everything connected right but it never would boot up
with that power supply, and said it needed us to insert a system
disc or something. When I put the old power supply back in it
started up fine again. Can anyone let me know what happened, and
suggest what to do if we can't get another power supply just like
the one that's going bad? I'm afraid it has been discontinued.

Thanks for any help!

David
 
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C

Charlie Hoffpauir

Hi,

I work at a night club and we have a lighting control board that
has two mother boards. The other day it wouldn't try to come on
at all, acting like it wasn't getting power. So I made sure it
was getting power, unplugged and plugged it back several times,
and tried starting it several times. Finally after a number of
attempts it started up and ran fine, but a couple of tech people
said it sounds like the power supply is going bad. It has a HIGH
POWER® HPC-360-302 DF power supply. If I remember right it has
five connectors: 1 twenty wire, 3 four wire, and 1 two wire. We
tried replacing it with a newer type from Micro Center, and had
to use an adapter to try to make the two wire connector work. It
looked like everything connected right but it never would boot up
with that power supply, and said it needed us to insert a system
disc or something. When I put the old power supply back in it
started up fine again. Can anyone let me know what happened, and
suggest what to do if we can't get another power supply just like
the one that's going bad? I'm afraid it has been discontinued.

Thanks for any help!

David

It doesn't look like anything special to me, and it doesn't appear to
be discontinued....


http://www.highpowersupply.com/product-ps-hpc360302df.htm

and

http://www.atxpowersupplies.com/630-watt-power-supply.htm?psu=630WPS-HPC-360-302DF

and

http://www.supernotebook.com/power-supply.php?psupart=3358
 
B

- Bobb -

Hi,

I work at a night club and we have a lighting control board that
has two mother boards. The other day it wouldn't try to come on
at all, acting like it wasn't getting power. So I made sure it
was getting power, unplugged and plugged it back several times,
and tried starting it several times. Finally after a number of
attempts it started up and ran fine, but a couple of tech people
said it sounds like the power supply is going bad. It has a HIGH
POWER® HPC-360-302 DF power supply. If I remember right it has
five connectors: 1 twenty wire, 3 four wire, and 1 two wire. We
tried replacing it with a newer type from Micro Center, and had
to use an adapter to try to make the two wire connector work. It
looked like everything connected right but it never would boot up
with that power supply, and said it needed us to insert a system
disc or something. When I put the old power supply back in it
started up fine again. Can anyone let me know what happened, and
suggest what to do if we can't get another power supply just like
the one that's going bad? I'm afraid it has been discontinued.

Thanks for any help!

David
Not being obvious, but was the 'two wire' for the disk drive ? The 'adapter
that you needed' apparently didn't work ? IT did FIT though ? Can you give
us a link to what you have and details.
On the good PS , check the voltage across those 2 pins and compare. I'd go
to the website for the "lighting control board" / motherboard company to see
specs.
 
N

noi ance

Hi,

I work at a night club and we have a lighting control board that has two
mother boards. The other day it wouldn't try to come on at all, acting
like it wasn't getting power. So I made sure it was getting power,
unplugged and plugged it back several times, and tried starting it
several times. Finally after a number of attempts it started up and ran
fine, but a couple of tech people said it sounds like the power supply
is going bad. It has a HIGH POWER® HPC-360-302 DF power supply. If I
remember right it has five connectors: 1 twenty wire, 3 four wire, and 1
two wire. We tried replacing it with a newer type from Micro Center, and
had to use an adapter to try to make the two wire connector work. It
looked like everything connected right but it never would boot up with
that power supply, and said it needed us to insert a system disc or
something. When I put the old power supply back in it started up fine
again. Can anyone let me know what happened, and suggest what to do if
we can't get another power supply just like the one that's going bad?
I'm afraid it has been discontinued.

Thanks for any help!

David

Did you need to attach the extra 4pin connector to the motherboard? The
2 wire is typically to power fans, so, maybe the motherboard needs the
24pin power connection instead of a 20pin connection from that power
supply. Or you could have just missed securely plugging in the
connections.
 
N

newsreader

The specs don't mention a 2 wire as such. Maybe a SATA power?

One issue with systems that don't power up correctly is problems in the
standby circuits. Or you could have capacitor problems. (google search
for "bulging capacitors".

You could also pull the power up connectors off the board and see if
shorting the pins with a screwdriver will bring the system up. The power
up switch hits the standby circuits on the M/B and those circuits then
signal the P/S to come up. IIRC, it is the green wire going to 0 that
brings it up.

I also have a question regarding a PS wiring. Do the multi-rail have
their cables marked as to which rail the wire is connected? It is
conceivable to have "everything" connected to the same rail if
the wires are not marked?
 
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P

Paul

Hi,

I work at a night club and we have a lighting control board that
has two mother boards. The other day it wouldn't try to come on
at all, acting like it wasn't getting power. So I made sure it
was getting power, unplugged and plugged it back several times,
and tried starting it several times. Finally after a number of
attempts it started up and ran fine, but a couple of tech people
said it sounds like the power supply is going bad. It has a HIGH
POWER® HPC-360-302 DF power supply. If I remember right it has
five connectors: 1 twenty wire, 3 four wire, and 1 two wire. We
tried replacing it with a newer type from Micro Center, and had
to use an adapter to try to make the two wire connector work. It
looked like everything connected right but it never would boot up
with that power supply, and said it needed us to insert a system
disc or something. When I put the old power supply back in it
started up fine again. Can anyone let me know what happened, and
suggest what to do if we can't get another power supply just like
the one that's going bad? I'm afraid it has been discontinued.

Thanks for any help!

David

Most likely reason the Micro Center supply doesn't "work", is
modern supplies are missing the -5V output.

http://www.highpowersupply.com/product-ps-hpc360302df.htm#sp

The HPC-360-302 does have -5V. The usage of -5V was discontinued
years ago (10+ years ???). Motherboards really should not be using
it, but occasionally you run into an older system that still has
that dependency. Such an old motherboard won't start, unless -5V
is present.

It is pretty hard to detect whether a motherboard needs it or not.
Even if you took an ammeter, and measured current flow from the
-5V pin on the main connector, the current draw could be so small
as to be inconclusive. The motherboard won't be drawing gobs of
power from that rail.

If you look at the Micro Center supply, you'll find one pin is
missing from the main connector. When the latest ATX standard
removed -5V, they just removed the pin from the connector, so
that there would be no connection to the motherboard on that
pin. You can use that fact, or you can look at the label
on the side of the supply, to see there is no mention of
a current rating for -5V.

You have two choices. Find an older supply, one with -5V on it.
Or, if you have a friend who is acquainted with electronics,
get the friend to hook up a 7905 regulator to the -12V, and
make -5V from that. (You'll also need to install a pin
in the "empty" location on the main connector, and connect
your -5V circuit to that pin.) As long as the current draw
from -5V is not too large, it might work. That alternative
should only be contemplated if you really can't find an
older supply. (Some day, finding a supply with -5V on it,
is going to be impossible.)

I think I have one computer in the house here, that needs
-5V. And I'm not looking forward to finding another
supply for it.

(Power supply specs, oldest to newest. The first spec
is for a supply that still has -5V. Compare that, to
the other two specs.)

http://web.archive.org/web/20030424...org/developer/specs/atx/ATX_ATX12V_PS_1_1.pdf

http://www.formfactors.org/developer/specs/atx/ATX12V_1_3dg.pdf

http://www.formfactors.org/developer/specs/ATX12V_PSDG_2_2_public_br2.pdf

This is an example of a supply that claims to have some -5V
output. This is not particularly balanced with respect to
older motherboards. Some of the older ones, have more
load on 3.3V and/or 5V, and the 12V might only need 15 amps
or a bit more. This one has a lot of 12V capacity (good for
modern systems, where the processor uses the 12V rail, as
well as PCI Express video cards). But the 3.3V and 5V could
use more amperes, to help older systems. (I have a system here,
that needs 25 amps from +5V, an old S462 Athlon system>)

http://www.newegg.com/Product/Product.aspx?Item=N82E16817338022

Sorry I can't find anything better than that. You may have to
visit a smaller retailer, search around some surplus place,
to find the right kind of supply.

I have no idea where this company is located, what their reputation
is, but at least the basic power numbers look good.

http://www.mypccase.com/46foramdduat.html

(This page has a few pictures of the ZIPPY HP2-6460P-SATA version.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817103707

(This page claims to have one unit in stock.)
http://www.amazon.com/Zippy-HP2-646...1?ie=UTF8&s=electronics&qid=1283071387&sr=8-1

(This page has connector details. You would connect the 2x2 ATX12V
to your system, and leave the 2x4 12V connector disconnected. This
supply is also capable of powering dual Xeon systems with the eight
pin power connector for the processors.)

http://www.btostech.com/store/pc/HP2-6460P-Zippy-Emacs-460-watts-PS2-power-supply-56p124.htm

Good luck,
Paul
 
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