HOT POWERSUPPLIES on XPC 200watt systems? Wrong CPU temp?

Okay...

I've been playing around with my XPX (SN41G2 - NForce2) system.

With the cover off, I've noticed that the PSU (power SUpply) is VERY
VERY VERY HOT!!

I can only hold my finger on the PSU for a few seconds before it
becomes really painful.

Mind you, while I'm used to PSUs (with fans) blowing hot aire out - I
am not used to them GENERATING that much heat.

This cannot be good. Afterall, I only have the cover off at this
point. This thing is HOT on all sides, even the metal in front of the
cooling fan is hot (but its the coolest part). This is HEAT that is
acting like a radiator to the rest of the system (I would assume).

yes, the cooler fan is blowing. I used very light paper (sheet of
Toiler paper) and it seems to not push it away very much (maybe a mm
or 2) Man, this is what I call bad!

I have a 60mm fan handy that I plugged in and placed at the rear of
the PSU over the useless PSU fan.

And WOW, the 60mm was SUCKING the heat right out of t he PSU!!
imagine how much better it would be without the useless 40mm in the
way!

So... is this kind of heat NORMAL, or is the 40mm cooler fan inside
the PSU defecting - its very quiet , but its spinning is very
useless...



Other Questions:

I'm doing some experiments with an AMD XP3000 CPU in this case.

I've yet to use the HEAT PIPE (okay, how tight is tight? Im supposed
to set the wright under 4KG with an electronic screwdriver? Uh -
where do I get these? How many people have such tools?) which is okay
for now.

I used the STOCK retail CPU cooler (again, I've not put the cover on)
which is low profile.

It blows AIR onto the heatsink like other HSF units. The TEMP is
about 58c.

I pulled off the fan and faced it the other way - which blows hot air
UP... The CPU temp was about 55c

I placed a bigger & faster 60mm fan on top, blowing away from the CPU
and got 49~51c - but 56c on full load.

I removed the spinning cooler away for a bit to watch the temp. (The
system is set to shut down at 65c and the built in over-heat is set to
shut off at 85c - hardwired)

It slowly climbed in temp. The second it reached 60c, the XPC shut
down suddenly, the overheat light came on. ???????

I let it cool down and put the fan back on (there are groves so
playing with the fan is easy to remove and replace)

With the bigger 60mm facing INTO the CPU, the avg temp for the CPU was
53c.

I had later replaced the original 60mm fan, and put it on full load
again - I had estimated it was as high as 61c... as it was on 60 in
bios. (Why doesnt Shuttle have a Windows Monitoring tool? Like ASUS
and MSI?) with obviously no shut down issues.

So? Does this mean there is an improper reading of the temp?

What does the AVG temp of your AMD CPU get with the heat pipe?

My currently OC 2500 in my main computer is 55c, but seems to max out
around 57 on full load. (If I wasn't OC, it would be 51c now)

Thought I'd share this info... and get some help on some of my
questions, especially about the PSU heat.

Thank you



--
Remember when real men used Real computers!?
When 512K of video RAM was a lot!

Death to Palladium & WPA!!

Darthy <> wrote in
news::

> Okay...
>
> I've been playing around with my XPX (SN41G2 - NForce2) system.
>
> With the cover off, I've noticed that the PSU (power SUpply) is
> VERY VERY VERY HOT!!


Sounds like your PSU fan is not working.

you should probably get the psu replaced as soon as possible. Sounds like a
fire hazard. I thought I read somewhere about the shuttle power supplies
and fire hazard. You are probably still under warranty. If not, they can't
be that much. Better than burning your house down.

Tom

"Darthy" <> wrote in message
news:...
> Okay...
>
> I've been playing around with my XPX (SN41G2 - NForce2) system.
>
> With the cover off, I've noticed that the PSU (power SUpply) is VERY
> VERY VERY HOT!!
>
> I can only hold my finger on the PSU for a few seconds before it
> becomes really painful.
>
> Mind you, while I'm used to PSUs (with fans) blowing hot aire out - I
> am not used to them GENERATING that much heat.
>
> This cannot be good. Afterall, I only have the cover off at this
> point. This thing is HOT on all sides, even the metal in front of the
> cooling fan is hot (but its the coolest part). This is HEAT that is
> acting like a radiator to the rest of the system (I would assume).
>
> yes, the cooler fan is blowing. I used very light paper (sheet of
> Toiler paper) and it seems to not push it away very much (maybe a mm
> or 2) Man, this is what I call bad!
>
> I have a 60mm fan handy that I plugged in and placed at the rear of
> the PSU over the useless PSU fan.
>
> And WOW, the 60mm was SUCKING the heat right out of t he PSU!!
> imagine how much better it would be without the useless 40mm in the
> way!
>
> So... is this kind of heat NORMAL, or is the 40mm cooler fan inside
> the PSU defecting - its very quiet , but its spinning is very
> useless...
>
>
>
> Other Questions:
>
> I'm doing some experiments with an AMD XP3000 CPU in this case.
>
> I've yet to use the HEAT PIPE (okay, how tight is tight? Im supposed
> to set the wright under 4KG with an electronic screwdriver? Uh -
> where do I get these? How many people have such tools?) which is okay
> for now.
>
> I used the STOCK retail CPU cooler (again, I've not put the cover on)
> which is low profile.
>
> It blows AIR onto the heatsink like other HSF units. The TEMP is
> about 58c.
>
> I pulled off the fan and faced it the other way - which blows hot air
> UP... The CPU temp was about 55c
>
> I placed a bigger & faster 60mm fan on top, blowing away from the CPU
> and got 49~51c - but 56c on full load.
>
> I removed the spinning cooler away for a bit to watch the temp. (The
> system is set to shut down at 65c and the built in over-heat is set to
> shut off at 85c - hardwired)
>
> It slowly climbed in temp. The second it reached 60c, the XPC shut
> down suddenly, the overheat light came on. ???????
>
> I let it cool down and put the fan back on (there are groves so
> playing with the fan is easy to remove and replace)
>
> With the bigger 60mm facing INTO the CPU, the avg temp for the CPU was
> 53c.
>
> I had later replaced the original 60mm fan, and put it on full load
> again - I had estimated it was as high as 61c... as it was on 60 in
> bios. (Why doesnt Shuttle have a Windows Monitoring tool? Like ASUS
> and MSI?) with obviously no shut down issues.
>
> So? Does this mean there is an improper reading of the temp?
>
> What does the AVG temp of your AMD CPU get with the heat pipe?
>
> My currently OC 2500 in my main computer is 55c, but seems to max out
> around 57 on full load. (If I wasn't OC, it would be 51c now)
>
> Thought I'd share this info... and get some help on some of my
> questions, especially about the PSU heat.
>
> Thank you
>
>
>
> --
> Remember when real men used Real computers!?
> When 512K of video RAM was a lot!
>
> Death to Palladium & WPA!!

Yeah, the 200W Acme in my SB61 gets pretty warm, but not what I would call
hot. I am guessing you can set the speed of the PSU fan and also the temp
levels it speeds up at in the BIOS like the SB61. If so, have a look and see
what that is set to. Failing that, it sounds like it could be a faulty PSU
fan or maybe even something else within the PSU.

Mark Hallam

"Quentin Stephens" <> wrote in message
news:Xns93C1C6557235Dstqstqstq@80.1.224.5...
> Darthy <> wrote in
> news::
>
> > Okay...
> >
> > I've been playing around with my XPX (SN41G2 - NForce2) system.
> >
> > With the cover off, I've noticed that the PSU (power SUpply) is
> > VERY VERY VERY HOT!!
>
>
> Sounds like your PSU fan is not working.

No ATX PSU is allowed to be a fire-hazard and be ATX compliant:
o It must withstand short-circuit without damage & still work
o It must contain all failures within itself without material ejection

Having said that, it sounds like you have a problematic fan.
Someone should lobby shuttle to redesign the PSU to a proper fan size.
--
Dorothy Bradbury
www.stores.ebay.co.uk/panaflofan (Ebay)
http://homepage.ntlworld.com/dorothy...ry/panaflo.htm (Free 1st-Class
Shipping)

On Sun, 27 Jul 2003 00:35:50 +0100, "dorothy.bradbury"
<> wrote:

>No ATX PSU is allowed to be a fire-hazard and be ATX compliant:
>o It must withstand short-circuit without damage & still work
>o It must contain all failures within itself without material ejection
>
>Having said that, it sounds like you have a problematic fan.
>Someone should lobby shuttle to redesign the PSU to a proper fan size.

Well... replaced it with another SHuttle PSU... this one's fan is
blowing for sure - but the PSU still seems hot.. of course I am
comparing to a desktop 350watt PSU which is quite cool on the outside
(if the PSU case)...

I'm doing a CASE mod, and experimenting and placing a 60mm fan outside
the PSU seems to help quite a bit, but modifing the PSU (drillingthe
60mm fan into the case - and that opens another can of worms.

It would have been nicer to have a slightly faster moving fan or
bigger one - like on the side.. who knows... its a tiny PSU - but I've
worked with smaller 300watters for servers.


--
Remember when real men used Real computers!?
When 512K of video RAM was a lot!

Death to Palladium & WPA!!