Grating metal

  • Thread starter Thread starter George Hester
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George Hester

Yes that is what my Power Supply sounded like when I turned on the system.
This is it:

PII Dual Processor
Floppy Drive
CD-ROM ATAPI
2 ATAPI IDE Harddrives (40G, 80GB)
2 UW SCSI Harddrives (9GB ea)
Other PCI Periphials

So I removed the two IDEs and I'm back in business. It even threw my Second
SCSI for a loop.

Any suggestions on minimum Power Supply Watage for this setup?

Normally when I do "stuff" it goes without a hitch. But since I got this
SCSI machine I been hitting brick walls since the day I got it. I'm just
inching along here.
 
Yes that is what my Power Supply sounded like when I turned on the system.]
Click to expand...

Most likely you need to lube the fan asap, which buys you a
little time to find a repacement fan (or whole PSU).

This is it:

PII Dual Processor
Floppy Drive
CD-ROM ATAPI
2 ATAPI IDE Harddrives (40G, 80GB)
2 UW SCSI Harddrives (9GB ea)
Other PCI Periphials

So I removed the two IDEs and I'm back in business. It even threw my Second
SCSI for a loop.

Any suggestions on minimum Power Supply Watage for this setup?

Normally when I do "stuff" it goes without a hitch. But since I got this
SCSI machine I been hitting brick walls since the day I got it. I'm just
inching along here.
Click to expand...

Does it use a standard ATX?
A good modern 300W would handle it, but IMO it's worth the
extra dozen bucks for a (name-brand) 350-400W.
 
350 400 hmmm. I have a brand new 300 ATX. I meant to say 3 IDEs. Oops!
Oh well thanks.

--
George Hester
_______________________________
kony said:
Yes that is what my Power Supply sounded like when I turned on the
Click to expand...
system.]

Most likely you need to lube the fan asap, which buys you a
little time to find a repacement fan (or whole PSU).

This is it:

PII Dual Processor
Floppy Drive
CD-ROM ATAPI
2 ATAPI IDE Harddrives (40G, 80GB)
2 UW SCSI Harddrives (9GB ea)
Other PCI Periphials

So I removed the two IDEs and I'm back in business. It even threw my Second
SCSI for a loop.

Any suggestions on minimum Power Supply Watage for this setup?

Normally when I do "stuff" it goes without a hitch. But since I got this
SCSI machine I been hitting brick walls since the day I got it. I'm just
inching along here.
Click to expand...

Does it use a standard ATX?
A good modern 300W would handle it, but IMO it's worth the
extra dozen bucks for a (name-brand) 350-400W.
Click to expand...
 
Oh I should say going back to the config of one IDE the noise doesn't
happen.

--
George Hester
_______________________________
kony said:
Yes that is what my Power Supply sounded like when I turned on the
Click to expand...
system.]

Most likely you need to lube the fan asap, which buys you a
little time to find a repacement fan (or whole PSU).

This is it:

PII Dual Processor
Floppy Drive
CD-ROM ATAPI
2 ATAPI IDE Harddrives (40G, 80GB)
2 UW SCSI Harddrives (9GB ea)
Other PCI Periphials

So I removed the two IDEs and I'm back in business. It even threw my Second
SCSI for a loop.

Any suggestions on minimum Power Supply Watage for this setup?

Normally when I do "stuff" it goes without a hitch. But since I got this
SCSI machine I been hitting brick walls since the day I got it. I'm just
inching along here.
Click to expand...

Does it use a standard ATX?
A good modern 300W would handle it, but IMO it's worth the
extra dozen bucks for a (name-brand) 350-400W.
Click to expand...
 
Oh I should say going back to the config of one IDE the noise doesn't
happen.
Click to expand...


Are you sure it's coming from the PSU?
Seems like a drive failure would make that more likey,
though in rare cases adding or subtracting a component will
change the voltage just enough to put a fan into a resonant
RPM- still a sign the fan is shot and (at least the fan if
not whole psu) should be replaced.
 
I upgraded the PSU a bit 50W. I really need to do better. No the noise
hasn't returned. Boy it was nasty.
I have the system going now. Here is is:

Dual PII 333MHz
Floppy
CD-ROM (24x)
3 IDE Hardrives (9GB Caviar WD, 40GB WD, 120GB WD)
2 SCSI drives (Micropolis Model 3391SS, 16-Bit Wide/Single-Ended, 80-pin
SCA-2 Connector)
http://perso.wanadoo.fr/rayp/HD/MICROPOLIS/3391.html
300W PSU
http://www.home2000.net/client/fspgroupusacom/proddetail.asp?linenumber=191
Sorry I still can't get the specs on the Motherboard. I'm told it is a
Super Micro but that best I can come up with so far.
Windows XP Professional no SP yet.

I'm still having a little trouble with the system. The BIOS has a SCSI
check at boot. SCSI ID0 is always seen but SCSI ID1 not always. Sometimes
it will be seen, sometimes it won't be seen but the Op sys does at the
desktop, and other times not seen at all. I think this is a PSU issue.
What do you think?
 
I upgraded the PSU a bit 50W. I really need to do better. No the noise
hasn't returned. Boy it was nasty.
I have the system going now. Here is is:

Dual PII 333MHz
Floppy
CD-ROM (24x)
3 IDE Hardrives (9GB Caviar WD, 40GB WD, 120GB WD)
2 SCSI drives (Micropolis Model 3391SS, 16-Bit Wide/Single-Ended, 80-pin
SCA-2 Connector)
http://perso.wanadoo.fr/rayp/HD/MICROPOLIS/3391.html
300W PSU
http://www.home2000.net/client/fspgroupusacom/proddetail.asp?linenumber=191
Sorry I still can't get the specs on the Motherboard. I'm told it is a
Super Micro but that best I can come up with so far.
Windows XP Professional no SP yet.

I'm still having a little trouble with the system. The BIOS has a SCSI
check at boot. SCSI ID0 is always seen but SCSI ID1 not always. Sometimes
it will be seen, sometimes it won't be seen but the Op sys does at the
desktop, and other times not seen at all. I think this is a PSU issue.
What do you think?
Click to expand...

That you're not giving us enough info to do anything more
than guess. You mention not if the replacement power supply
is decent brand. Voltage readings with a multimeter should
be taken during the initial power-up.
 
I gave you a link to the exact PSU. What more do you want in that regard?
Click to expand...

Sorry, it wasn't clear that that was the replacement,
perhaps it would've helped if the reply and link were
embedded at the appropriate point instead of top-posted.
There ARE reasons why the rest of us don't top-post.

That is a below-average quality PSU for a 300W unit.
Ideally you'd have one with higher 3V+5V combined amperage
to deal with the drives and dual CPUs. However, I cannot be
certain it is the problem at this point which is why I
menitoned taking voltage readings during the power-up
sequence.
 
That sounds like a good idea. Only I don't have the tool nor do I know
exactly where to place the probes. Tell me exactly what the better 3V+5V
should be. I don't know what I have but whatever you suggest will be what I
look for. Oh I finally found the MOBO. Here it is:

Supermicro P6DLE/DLF/DLS/SLA/SLS
Dual Intel Pentium II, 375 MHz (5x75)
Intel 82440LX/EX Chipset
AMI 7/95 BIOS

The SCSI harddrives (2) are:

Micropolis 9GB 3391SS
 
That sounds like a good idea. Only I don't have the tool nor do I know
exactly where to place the probes. Tell me exactly what the better 3V+5V
should be.
Click to expand...

Typically a newer (Including other Sparkle 300W versions)
PSU would have 200-240W combined 3V+5V rating, at least in
an ATX2.01 era PSU as would be most appropriate for that
system. Newer ATX2.03 may have more 12V amperage, less
3V/5V, as newer CPU use 12V rail instead of the 5V-derived
power that yours (presumably, I dont' have that board here)
does.


I don't know what I have but whatever you suggest will be what I
look for. Oh I finally found the MOBO. Here it is:

Supermicro P6DLE/DLF/DLS/SLA/SLS
Dual Intel Pentium II, 375 MHz (5x75)
Intel 82440LX/EX Chipset
AMI 7/95 BIOS

The SCSI harddrives (2) are:

Micropolis 9GB 3391SS
Click to expand...

Determining PSU adequacy would be useful, othewise I'm out
of ideas. You could either get a multimeter (or have
someone else do it) and take the readings or try another
name-brand (even Sparkle) that has higher 3V+5V rating.
Typically any name-brand that specs 350W or more will have
higher ratings, but you shouldn't actually need 350W or more
watts. Another cost-effective PSU might be a Thermaltake
420W, they're often available for under $40 at
http://www.newegg.com , but again I'd check voltages before
buying new parts.
 
That is a below-average quality PSU for a 300W unit.
Ideally you'd have one with higher 3V+5V combined amperage
to deal with the drives and dual CPUs. However, I cannot be
certain it is the problem at this point
Click to expand...

A Fortron/Sparkle is below average in quality??? :( I have an
ATX-300GT myself, and internally it's virtually the same as my 350W
FSP-350xx, with an identical power transformer. The heatsink for the
high voltage transistors is smaller, but that's to make room for a
passive PFC coil.
 
Well I'd like to do that. So the tool is called a Multimeter. And where
pray tell do I place the probes? In the connectors? Got to start
someplace.
 
A Fortron/Sparkle is below average in quality??? :( I have an
ATX-300GT myself, and internally it's virtually the same as my 350W
FSP-350xx, with an identical power transformer. The heatsink for the
high voltage transistors is smaller, but that's to make room for a
passive PFC coil.
Click to expand...

It is below average for a modern name-brand 300W, including
other retail 300S Sparkles. Perhaps yours is some kind of
stock diversion from a better line if it looks same, as I've
seen some that were not built as well, they typically came
free-with-case.
 
Well I'd like to do that. So the tool is called a Multimeter. And where
pray tell do I place the probes? In the connectors? Got to start
someplace.
Click to expand...

Yes, multimeter.
You might want to throoughly read the instruction manual and
Google for some basic tutorials on usng one. Basically the
range is set to low single-volt (or whatever covers that
range) scale then the black probe contacting the black
connector wire, the red probe connecting in turn to (if the
PSU has standard color scheme), 3.3V- Orange, 5V- red, 12V-
yellow.
 
OK that's what the PSU is going to deliver. But I thought we wanted to know
what the MOBO wants. In other words the probes go on the MOBO right?
 
OK that's what the PSU is going to deliver. But I thought we wanted to know
what the MOBO wants. In other words the probes go on the MOBO right?
Click to expand...

That's what the PSU is "supposed" to deliver... the check
would be whether it IS actually delivering that.

No, you don't have to be concerned about the mobo at this
point, the test is that with the PSU connected, the system
being turned on, whether it's bringing up the voltages to
acceptible levels soon enough, and what the final stabilized
voltage is.

In other words, what I wrote, nothing more or less.
There is no test of motherboard circuits that tells you
about the power supply itself.
 
kony said:
It is below average for a modern name-brand 300W, including
other retail 300S Sparkles. Perhaps yours is some kind of
stock diversion from a better line if it looks same, as I've
seen some that were not built as well, they typically came
free-with-case.
Click to expand...

It should be the finest quality because it cost a whole $10, delivered.
:) Actually it tested as well with my 380W load as my Fortron
FSP-350xxx and 300W Delta did, and inside it doesn't look cheapened or
anything.
 
OK kony you've given me enough where I can likely take it from there. If
not I can come back (?) but I should now know what I am doing and what to
expect. Thanks.
 
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