3 Pin connectors stopped working?!

B

BNILSSON

Hi group.
I got three, 3pin connectors on my Asus main board that is for plugging
in, the CPU fan, Power fan and a Case fan, for power and RPM indication
of these fans.
Yesterday my Asus Probe popped up and indicated that the fan speed was
noted, on all the fans, thank god I had the CPU fan plugged in to a 4pin
socket for power and the indicating led (only) installed on the 3pin
connector for the CPU fan.
I have taken the whole unit apart and reinstalled everything and tried
a new PSU, that I know is ok.- BUT, I cant get any of these 3pin
connectors to give out any power, in order to run these fans, from the
main board.
Any ideas, help or feed back, will be appreciated.
Thanks
BN
 
B

BigJIm

had one fail on an ECS board so I disabled the hardware monitor and
connected the fans, using an adapter directly to one of the power connectors
from the power supply.
 
B

BNILSSON

Big Jim.
Yah, I was luck that i did not have the CPU power connected to the 3pin
connector, but directly to the power supply! If not, I think that my CPU
would had been fried.
But, I'm still trying to figure out, WHY, the power to the main board
fan connectors( 3pin) did fail, and what I can do to fix it?
It's obvious that it is something in the main board or in the BIOS, that
gave up.
Sent an e-mail to ASUS tech support, but that will never be answered,
I'm sure! They never replied to a previous question I asked them, six
moths ago!
BN
 
J

JAD

Did you have a 'checksum error' recently? In the bios have the Fan
headers been disabled?
 
B

BNILSSON

Well, I guess this is one of the things that is summed up to "Sh--
happens"!
Have not heard from Asus Tech Support.

JAD; I don't know what BIOS you have, but, I have never heard of any
BIOS setting for " Fan headers"!
BN
 
A

Allen_L

In
BigJIm said:
had one fail on an ECS board so I disabled the hardware monitor and
connected the fans, using an adapter directly to one of the power
connectors from the power supply.

I just had a new Asus board, the latest and greatest with Intel Chipset for
an Intel P4 and all the fan headers were dead out of the box with the
default BIO settings. This was less than a month ago. Didn't notice it until
I had everything almost installed after it posted Ok and everything was
showing in the BIOS as normal, but then noticed that the rear case fan
wasn't working, and then checked the other headers, with a known working
fan, and the other two were dead also. Only one working was the CPU fan
header (thanks goodness). Had to RMA the board, and was disgusted and
ordered a different brand and stayed away from Asus. Since I don't
overclock, but *was* thinking I might, was the reason for ordering Asus,
ended up with a 15% restock fee from NewEgg and ordered an Intel D875PBZLK
board. I know it was probably a fluke with the Asus, but now, with this
news, I'm not so sure that it might not be a factory build error or quality
control.

....Allen
 
J

JAD

IN the hardware monitor of ...don't recall the bios brand however.
You are able to disable or enable each fan controller.
 
O

Overlord

Used to have an Asus A7V and frequented the Asus forums (tho not on Asus
site). Loading the fan power header with fans that drew too much current
(it didn't take much either!), and blowing the header was a common occurance
amongst the groups. If your MB is any kind of recent, I would figure that Asus
still has problems with this design flaw. In all probability you can jump the
monitoring wire from the fans to the monitoring pin on the 3pin MB connectors
and it will still let you monitor the fan speeds, but for what? You're going to
either be getting 4pin Molex connectors (it's power splitter time!) and powering
the fans directly from the PS (in which case the fan speeds will never change),
OR you can buy some Smartfans which run off a variety of connections, also
have connectors for included temp sensors that vary the fan speed.
The Smartfans also come with tiny pots so you can manually tweak the speeds.




Hi group.
I got three, 3pin connectors on my Asus main board that is for plugging
in, the CPU fan, Power fan and a Case fan, for power and RPM indication
of these fans.
Yesterday my Asus Probe popped up and indicated that the fan speed was
noted, on all the fans, thank god I had the CPU fan plugged in to a 4pin
socket for power and the indicating led (only) installed on the 3pin
connector for the CPU fan.
I have taken the whole unit apart and reinstalled everything and tried
a new PSU, that I know is ok.- BUT, I cant get any of these 3pin
connectors to give out any power, in order to run these fans, from the
main board.
Any ideas, help or feed back, will be appreciated.
Thanks
BN
~~~~~~
Bait for spammers:
root@localhost
postmaster@localhost
admin@localhost
abuse@localhost
postmaster@[127.0.0.1]
(e-mail address removed)
~~~~~~
Remove "spamless" to email me.
 
B

BNILSSON

Overlord: Yah, I got the Asus A7V266-C board! I guess that these pins
just crap out and Asus knows about it and are not telling!
I found out that Asus got the worst Tech. (non) Support that I have ever
run into!
Four requests for support (in this case) and all I got, after telling
them the life history of my PC, I get an answer back, telling me that I
did not furnished all the info that they need, about my whole system (I
did not mention the CDRW manufacturer and the HDD spec's.!)- this was
Friday pm, that I requested the last "help", from them! I revised my
"help case" profile and sent it back to them I've heired nothing since!
(Almost as bad as ATI!)
Well, this has been going on for some weeks now and I don't expect any
help from Asus, at this point! that's why I posted here!
Yah- I know that I can get things to indicate the rpm part of the fans,
but who hell wants to have all the damned wires running all ower the
inside of the case!?
I'm interested in monitoring the temp. I was thinking about
flashing the BIOS and see if that would get the MoBo power back to the
pins, but I don't want to screw will a BIOS flash, unless it is really a
emergency!
BTW!- What forum did you go to, in order to find out about this problem?
Thanks for you feed back.
BN
 
H

Hackworth

JAD said:
IN the hardware monitor of ...don't recall the bios brand however.
You are able to disable or enable each fan controller.

I don't believe the settings of which you speak actually disables the 3-pin
header. It just disables the *monitoring* of those headers.
 
O

Overlord

Yeah, it's a known defect. From what I've seen Asus support is, or at least
was the last time I looked basically was "hey we have a forum and you can
see if another user was able to fix your problem". Support?

For future reference, I have a habit of writing down specs and such when I
build a new system and then updating it little by little.
It started a long time ago with the CPU model number (you're never going to
pull the HS/fan and clean the CPU just to get a model number) and by now it's huge.
It ended up being one big text file updated occasionally.
Dual SCSI controllers; model numbers, manufacturers, firmware revisions,
settings, mode pages, serial numbers...
Drives? I have 10; model numbers, firmware, spindle speed, buffer size, internal and
external transfer speeds, SCSI ID numbers, bus bandwidth, etc, etc....
RAM? Everything from ratios, voltage, timings, model, all the way down to
the serial numbers on the chips on the PCB.
Work on it a little at a time as it's a bitch to start from scratch.
Makes a nice reference for ya too.
Besides, next time they get shitty with you, bury them with a ¼meg text file.
They won't ask again....

Sorry guy but flashing the BIOS isn't going to get the fan header back.
How are you with a digital probe, multimeter, and soldering iron?
If flashing the BIOS scares ya (yes, it can), there are a couple Reliable
ways to minimize the danger. You can nail down your BIOS chip and if
it's socketed you can order a chip, flashed with whatever BIOS you like
from several venders on Ebay as a backup.
You can also install a Bios Savior for pretty cheap. It has an interface
between your Bios chip socket and the bios chip, and a cable to a dip
switch installed on a.... whatzzit? backplane slot cover. If your flash doesn't
take, you flip the dip switch and it boots from the old bios chip.
Also, flashing the bios, if you don't have a backup physical chip, FIRST use
the flash util to BACKUP the bios already on the chip to a floppy.
If it won't backup the present bios, GET OUT, something is already wrong.
DON'T go on to try and flash the bios in that case.
If you flash the bios and get an error message, DON'T reboot!
You may never see anything on that system again. CONTINUE to flash
several times until you get a successful flash. If you can't, flash back the
backup original bios from floppy. Also, write everything down including the
name of the backed up .bin file. Your very minimal bios flash boot may not
let you browse around looking for the name of the file you backed up on the
floppy. For that matter, you had better write down the name of the NEW bios
..bin file on the floppy before you boot to flash the bios.
Asus has a util that is supposed to flash your BIOS EEPROM from inside
windows. I did it once but is was scarey. It goes against my instincts....
We won't even get into hot flashing. It involves pulling the bios EEPROM
While The System Is Booted, putting in another IC and flashing that one.
It's more of a last ditch effort to fix a crashed flash and it's very.... chancy...
And yes (if you're wondering), I run a modified (hacked) BIOS.
It gets me around several Asus bios "features" that seem to want to make
my decisions for me.

As for all the wires in the case, I sheathed(loomed) mine with expandable
black sheathing. It's a PITA to do them all but looks real nice. You can
also run a lot of the smaller wires behind the motherboard. Let's face facts,
running a single fan RPM sensor cable behind the MB to pop up on one side
of the MB to connect to the 3pin connector.... how much cable are you going
to see? Maybe an inch; the fan connectors are usually very close to the side
of the MB. Depending on the number of your drives, you can also fold and
route the IDE cable and floppy cable behind the MB or at least on the other
side of the drive cages and pop it out to connect to the drives. Makes for
better airflow and a cleaner case. I, of course, have too many drives
connected to be able to do that tho I do have a round floppy cable that makes
for very easy routing. There are also round IDE cables. They're all in a
variety of colors.

Here's the original site. It appears to still have everything.
http://mitglied.lycos.de/Juggernaut/

Here is where it moved to.
http://www.a7vtroubleshooting.com/

Good site(s) very knowledgable and responsive forums too.


Overlord: Yah, I got the Asus A7V266-C board! I guess that these pins
just crap out and Asus knows about it and are not telling!
I found out that Asus got the worst Tech. (non) Support that I have ever
run into!
Four requests for support (in this case) and all I got, after telling
them the life history of my PC, I get an answer back, telling me that I
did not furnished all the info that they need, about my whole system (I
did not mention the CDRW manufacturer and the HDD spec's.!)- this was
Friday pm, that I requested the last "help", from them! I revised my
"help case" profile and sent it back to them I've heired nothing since!
(Almost as bad as ATI!)
Well, this has been going on for some weeks now and I don't expect any
help from Asus, at this point! that's why I posted here!
Yah- I know that I can get things to indicate the rpm part of the fans,
but who hell wants to have all the damned wires running all ower the
inside of the case!?
I'm interested in monitoring the temp. I was thinking about
flashing the BIOS and see if that would get the MoBo power back to the
pins, but I don't want to screw will a BIOS flash, unless it is really a
emergency!
BTW!- What forum did you go to, in order to find out about this problem?
Thanks for you feed back.
BN
~~~~~~
Bait for spammers:
root@localhost
postmaster@localhost
admin@localhost
abuse@localhost
postmaster@[127.0.0.1]
(e-mail address removed)
~~~~~~
Remove "spamless" to email me.
 
J

JAD

I was thinking that also and that is true....But this board was a
'dual cpu server Board' that had an option to switch to a
PCI(optional) controller and the ability to define what each header
would control with max speed thresholds etc. It was really decked out
for cooling. Anyway, hardly the situation here. Just popped into the
void and spewed out of the KB...
 
B

BNILSSON

Hi Overlord. Thanks for all the good info.-
really appreciated!
You know, that jumper may have been the reason why these pins stopped
working, probably got shorted out from that!?
Belive it or not!- I had a e-mail response from Asus Tech. today!!
He/she told me to remove everything in the PC, get the MoBo out and
check for any "irregularities",
Make sure there were no screws laying around under the MoBo, make sure
that there are nothing there, that could short out the board, clean
everything out and put it back together and make sure that I use the
paper washers on all hold down screws and told me, "If you don't have
any, you can get them from Radio Shack"! - If it still has the same
problem, I can RMA it back to them for repair.
Well, I already done all that and I'm not going to go thru taking to
board back out again and all the truble of a RMA procedure. I will have
to live with the additional fan wires around, no big prob.
I was just hopping that Asuse would come straight out and tell me the
facts, but, no way.
Thanks again for your help and good info.
Have a good one!
BN
 
B

BNILSSON

Hi JAD. yes, some MoBo BIOS has this option and this function would just
indicate a N/A option in the BIOS, if the indicators on the board did
not function right. The Asus board that I got come with a "Asus Probe"
that you can set up to monitor all the temps and fan rpm thru the built
in indicators in the board, but when they crap out you don't have any
power nor any fans working, from the board connectors.
Take care.
BN
 

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