MDD PSU FAN REPLACEMENT

A question thats been beat to death but i'll ask anyhow. I have a Dual 1GHZ MDD. I got this as a gift and the original owner never took part in the silence swap way back then. So it is a LOUD beast. I have just done my first cooling mod. My Idea was taken from XLR8your mac. Here is a few pics of my setup.
http://i7.photobucket.com/albums/y286/Kissfan74/DSCF0116.jpg
http://i7.photobucket.com/albums/y286/Kissfan74/DSCF0117.jpg
http://i7.photobucket.com/albums/y286/Kissfan74/DSCF0121.jpg
So my question is, What are good replacements for the 60mm psu fans? I have the original stock Deltas which move ALOT of air( 37cfm at 49) Which is MAJOR loud. I've searched everywhere for tips ect. I've even seen where a guy took some Volcano5s and used those fans. He has them rated at 32 cfm but that is wrong it's more like 24 cfm for those. So what would be the best and safest fans to replace the originals without hurting my psu. It gets really hot inside there and I don't wanna under do it . Any tips are welcomed.
I found these:
http://www.directron.com/ec6025.html
They look like just what I'm after. The CFM is lower then the stock fans but the noise level is less then 30. With my Case mod I think I can keep my temps low near the psu and have a quite machine! Are these fans good enough???? Thx in advance!!!!

Similar Messages

Dual 1.8 PSU fan replacement

I have a dual 1.8 Powermac G5 that has one really loud fan (suspect bearing, not CFM noise). I tore down the PSU, blew out the dust bunnies and singled out the bad fan, the 2-wire one. I'd like to replace them both, but am not sure of a good replacement, anyone found one? Currently they are Superred 0.22A, CHA6012CBN-O-R and ...CBN-OA-R Any advice before I order some that are too high of an RPM or too low would be great.

You might take a look at the fans at this link for information. The 5000 RPM fan is about the correct power level. I haven't (and won't tonight) taken a look at how fast the fans are spinning on my "free range" supply when powered up. Unfortunately, I don't have access to a strobotach unit, so I would only be guessing anyway.
(Wow! I hadn't even thought about a strobotach unit in a long time, and it's been several decades since I actually used one, probably in a rotating machinery lab class in the seventies. A fun toy, though.)
You could also Google "60mm square DC fans" and see what you find.

MDD PSU who swapped fans and what did you use ?

*Please keep this thread focused only on the 2 mdd psu fans*
Stock fans (2ea) 60x60x25mm specs:
+Minebea 2410ML-04W-B60 - 5300rpm / 25CFM 38dB
+Delta AFB0612EH 60x60x25mm - 6800rpm / 38 CFM 47 dB
I replaced them with a pair of Silenex IXP-34-16 / 18cfm 16db
Very quiet but I'd be more comfortable with a litte more air flow.
Has anyone tried them long term?

not sure about the power supply fans, but replacing the 120mm case fan with a silenx ixtrema (the 90 cfm one) is supposed to yield good results. the 60mm fans could be replaced with this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16835119021&cmre=60mm_fan-_-35-119-021--Product
it's the only 30+ cfm 60mm fan that's quieter than 30db... it's a 3 pin connector, but it ought to work... there's a guide that's easy to find using a google search where someone replaces the stock fans with some thermaltake volcano 5 fans... [no longer available, also 3 pin]

Fan replacement for MDD | Amount of airflow really needed?

Hi,
I am thinking to replace my noisy PSU fans with new ones. However, those old Delta Fans seems to have pretty... high-end specs what comes to airflow (38 CFM) and therefore the noise level (47dba). I have been working with computers pretty long time and I have never seen a computer which actually needs that much cooling just for PSU so I think that less is better in this case.
I thought that I replace them with 12 CFM fans (with only 20 dba each) or then again I am looking an alternative methods to create a somekind of airtunnel into that PSU by adding second cooler + pipe to the front of PSU. Is there anyone who has actually modded this PSU with this level before?
Also I am thinking to replace that 120mm cooler with 50-60 CFM cooler.
Howabout adding small cooler to the CPU heatsink?
... Desperate? **** yeah. I could use my MDD to blow leaves from my front yard!

If you aren't using NAP mode, I certainly recommend it in order to get that baseline temperature down. My MDD 'idles' i.e. email/web at around 39 degrees C. And for me, it has not introduced any instability.
I also applied the fan kernal extension mod (see URL below) which spins up the main fan at a lower threshold:
http://homepage.mac.com/paul74/MDDFanExtensionMod.htm
The extension mod doesn't let my MDD go above 56 degrees C and having the quieter Panaflo means I barely notice the difference anyway. This only tends to happen if I'm doing something CPU intensive like video transcoding using Handbrake.
Further improvements I've recently undertaken are:
1. Replacement of the passively cooled Radeon 9600 Pro with an Nvidia 7800 GS (BFG). While this has a fan, it only spins at full whack during boot and then calms down - it isn't noticable during normal operation.
2. Replaced the original IBM system HDD with a 'whisper quiet' Seagate (or WD - I forget which). I did this as the original IBM was pretty noisy - something you only notice once you've got rid of most of the fan noise.
3. Flipped over the PCI slot cooler. The intake for this was on the top. I removed the body from the metal slot mount and turned it around so that rising hot air is more likely to be captured. It is definitely pushing out hot air now.
I still plan to make a few further changes. I recently moved the speaker (now fixed to the interior 'ceiling' using bluetac). Considering mounting a fan where the speaker used to be to suck air in for the PSU and graphics card intakes.
I'm also still considering some exit fans between the CPU heatsink and the rear case.
Regarding the optical drives, I removed the stock combo and replaced it with a dual layer DVD/RW taken from a Lacie external FW unit I used previously with my eMac. I kept the original in a safe place in case I ever need it though!
In terms of OS X support for third party optical drives, I hear cough that it may be possible to update the firmware so that it is cough cough seen as a Superdrive. Thats just what I hear anyway.
Powermac MDD Mac OS X (10.4.9)

Fan replacements/upgrade for MDD Power Mag G4-suggestions please!

First, I apologize for again bringing up what has been a frequently discussed topic. (ad nauseum?) I tried to do some homework first but I'd like a little help if anyone has some recent experience.
I am looking to change out the large main CPU heat sink fan and possibly the two power supply unit fans in my pair of MDD Power Mac G4s. The specs are Dual 1.25ghz (fw400) MDD G4. One has a 400watt actel PSU and another has a samsung 360watt PSU. Both large CPU case fans seem to be the original delta models installed by apple. Though essentially identical in specs, The 400 watt machine has the thick aluminum finned heat sink and the 360 watt machine has the aluminum heat sink with the thin sheets. The 400 watt machine is definitely louder, but I'm not using either of them for critical audio work, so its just a preference thing on having them run a bit quieter.
Both G4s are pretty loud. The noise bothers me a little, but what I really want to do is to replace what must be now pretty old delta fans with newer, quieter fans that will help extend the life of these 2nd hand computers that I plan to use for a number of years.
I scoured the web and read many articles about MDD mods and fan replacements, but many of the articles date back to 2003 and most of the fans that people have used seem to be no longer produced or available (such as the panaflow model referenced on xlr8yourmac.com I ran into many dead links! Maybe that's because there are better fan options now?
If anyone out there has replaced or upgraded their fans in a MDD recently, could you please reply and let me know...
Where you got them
What size and model number(s) for the fans
Whether you noticed any improvement in noise/cooling
I saw a recent post about replacing fans on an AGP Power Mac...
http://discussions.apple.com/message.jspa?messageID=11628216#11628216
Would these fans be the same? I'm guessing that the MDD wind tunnel might need more cooling than a G4 (AGP) right? SOme places mentioned that the main fans were 119x119x25, while others mentioned that hey were 120x120x25. Is 1mm going to make a difference? I'd prefer not to have to dremel them if I don't need to!
Lastly, if you have a direct link to a reasonably priced fan that you'd recommend, I'd appreciate it greatly!
Thanks for any help!
Dave C

Thanks Japamac!
Thanks for your replies! Those look very good! So many to choose...
Exactly the info I was looking for. I was checking out the panaflow (I was a bit overwhelmed by the number of choices on the 'Performance-pcs' website... if you were buying, which one of those 34 would you get? Assuming a budget of 20 bucks per 120mm fan...)
But a followup question on the Panaflo model you linked to. In the many web articles I read I recall that one being well regarded. ,IF I buy that one, I have a few choices on tail options...
3 pin
4 pin
4 pin male molex with separate 3 pin rpm connector
Am I correct that if I opt for the last option I can get the fan to run at a medium rpm all the time and have it be less likely to ramp up under heavy loads?
Lastly, will this possibly be a problem I might have, simiar to what was noted by a xlr8yourmac fan modder -->
http://www.xlr8yourmac.com/systems/g4mirrored_drive_doors/noise_reduction/g4_ddr_noisereduction.html
"(Updated comments added 7/9/2009)
I have an important update to that G4 fan mod note I gave you.
I noticed that the 120mm fan wasn't pushing as much air as I thought it should, and I realized it was because the 2-pin fan connector on the motherboard wasn't providing enough power. +(3 pin connectors typically are for adjustable/variable speeds. But if it's a constant speed fan then maybe the 2 pin wiring was using only 5V vs 12V? (higher voltage = higher rpm fan speed typically)-Mike)+ I put the 3-pin connector back on and used a 3 to 4 pin Molex adapter adapter to connect it to the 4-pin hard drive power cables -- voila! Lots more air. So... Following the directions in the older article exactly may NOT work depending on the fan you get. Also, using a 3 to 4 pin adapter is much easier than modifying the connector from 3 to 2 pins as indicated in the article."
This was confusing because I thought that there was just a 3 wire lead to connect or splice, with the yellow wire probably just not being used.
Your thoughts?
Dave C

Fan Replacement?

My G4 867DP's fan doesn't come on when it gets to about 134-5F CPU temp...like it always has...As a result, the CPU's temp just keeps going up, so I turn it off before it causes more damage...I don't know which fan is not working and is this a user replaceable thing? Machine works fine except for this....Help!!!

The main fan is behind the front drive bay and blows directly on the processor heat sink. My 1.25G MDD has a small fan in the side door that services the optical drive and two little ones in the power supply. If processor temps are climbing, it's most likely the main fan.
On my newer MDD, the fans run all the time, speeding up slightly when the load gets heavy. When working, did yours stay off until the heat rose and then kick in? If so, there may be a fault with a sensor. If you run Apple Hardware test (on one of the CDs that came with the computer), it can point to sensor failures. That could save the trouble of replacing the fan only to find that the logic board has a problem.
There is a cheaper test: power off and open up the computer. Nudge the main fan with a plastic or wooden stick to see it it's seized up. Sometimes the nudge will get the fan running although it often indicates a need for cleaning at best and a failing fan at worst. The fan is easy to remove and replace and should be something you can do at home.
Often a thorough cleaning and eviction of dust bunnies can reduce operating temps. See this recent post I made about areas to look for airflow problems here: http://discussions.apple.com/thread.jspa?threadID=1999976&tstart=0
I don't have the specs for the fan at hand but will look around. The main considerations are, first, airflow rating and, second, fit. A replacement fan must match the original in its capacity to move air, and obviously must fit the space provided.

Direction of PSU fan in Quicksilver

I just recently replaced the power supply fan on my 733 quicksilver, but i am not sure if i put it in correctly. the fan acting as an intake fan and sucking air from outside the case and blowing it inwards. is this correct or do i need to flip it around? any help please!!
Quicksilver 733mhz, iBook G4 1ghz Mac OS X (10.4.8)

Hi
With the Quicksilvers the PSU fan and large case fan exhaust warm air whilst the CPU fan intakes cool air. It sounds as if you may have installed the PSU fan the wrong way around.

Mac Pro PSU fan not spinning...

System: Mac Pro (early 2009)
After a while the system shuts itself down, and then repeatedly does so while trying to boot back up. After letting it sit a couple of hours, it boots back up, but again starts shutting itself down.
I opened it up and noticed the PSU fan was not spinning - which eventually caused the PSU to overheat and power off.
I ran a hardware test, and got the following error...
4MOT/1/40000002: PS-0
I searched on the Internet for this error, and it seems (I assume) that this error means the PSU fan is bad, but I plugged it into another fan port on the motherboard and it worked fine. I then, plugged one of the other fans into the PSU Fan port and it did not work.
I reset the SMC.
I reinstalled the OS (Snow Leopard)
I loaded "Fan Control" software (PSU Fan stays at 0 RPM and cannot be manually adjusted.)
At this point I'm guessing it's either the power supply itself (which I find hard to believe), or the PWM controller for the PSU Fan is not working. To get around the issue, I'm ordering a "simple" (2 wire for power only) fan to replace the built-in fan and a manual (knob) speed controller. (Total of $10, until the real issue can be determined.)
If anyone could help any further, I'd appreciate it.
===========
Wanted to add reason I didn't think it is the PSU...
Red LED flashes when power cord is plugged in and again when it's unplugged.
PSU PWROK LED is green
5V STBY LED is amber
Tags: Mac Pro, 2009, PSU, power supply, fan, PWM

Most of the fans in the cabinet are under control of the SMC software. They do indeed run full speed with no software intervention, as a fail-safe mechanism. (Software crashes, fans roar at top speed.)
A program like "SMC fan control" can provide visibility to the temperatures, and SOME control of the base fan speeds. My recollection is that the PSU fans 'do their own thing' (unlike the main cabinet fans) and are not software controllable. Components inside the power supply determine the temperatures and adjust its own fan speeds.
If that is the case, when used in combination with your analysis above, you should be able to trace back to an output amplifier (intended to modulate fan speed) that is DEAD and stuck at an output that is telling the fan not to spin. I would hope a 29 cent component was responsible.
A short in the backplane seems exceedingly unlikely. Most of what the power supply does is directly onto its discrete wiring harness. The main DC harness to the motherboard uses high-current connectors. Using more than one of those for signaling or fan speed seems more wasteful than power supply designers could tolerate.

K8MM3-V PSU fan spins but no POST

MSI K8MM3-V SKT754 7181-10
AMD Sempron 2800+ (SDA2800BXBOX) 64Bit Architecture 1.6ghz
Samsung PC2100 512DDR, No name PC2100 256DDR, Crucial PC3200 512 DDR (in sig)
AGP MSI RX9250-TD128 Radeon 9250, Leadtek 4200TI (both X4/8) and onboard
60GB Maxtor, 17.2GB Seagate (IDE)
Lite-on DVD rom and NEC 3520a
PSU’s tried:
ColoursIT 550W
+3.3v = 28A
+5v = 35A
+12v = 30A
Antec TP 380W (one in sig)
Hiper type R 480W
+3.3V = 28A
+5V = 32A
+12V 1 = 18A
+12V 2 = 16A
I got the MOBO and CPU for a Friend of mine. She got her husband friend to set it up and had problems getting it to power up. (He works for the local council in I.T so he know his stuff even if it mostly older hardware) I asked them to try a different PSU (ColoursIT) as the ones they had was 12V @ 13a and 12v @ 15a
Well no joy so I took it back to try myself. After trying in 2 different cases (with the above hard ware) inside and out side. I can’t get it to POST. The weird thing is all the PSU fan spin when connected even if the front panel connectors are not connected. When connected the same happens but the power buttons have no effect. I know the buttons work it happy to power up my old XP chip.
The CPU fan won’t spin when connected to MOBO CPU fan header. But using a 4 pin to 3 pin fan adaptor it does. Reseated the CPU had the same outcome (all the pins look fine). I’ve tested all the RAM (one @ a time) and PSU’s in my rig (in sig) all are working fine and boots the system into winxp and all the rails are with-in 5%. The GFX’s I’ve got an old AMD 1800 XP tested and working.
On some MOBO with damaged CPU you normally get beeps. An asus socket 754 I had over a year ago use to give audio warnings when POST’ing e’g CPU not installed, GFX not installed. I get no Beeps from the K8MM3-V. Their no option to connect a D bracket (even though its not supplied)
Tried resetting CMOS and removed the battery for 8 hours and replaced it, also with another one.
I think the MOBO dead but it mite have taken out the CPU as well. I’ve got no other 754 to check it with.
Ideas ?

Hi!
Nice to see that some people realize that giving full specs is very important!
You did quite a lot already, so that leaves not much to suggest. The only thing I can think of now, is to check the CPU: is it installed correctly? Then you can take the board out and lay it on a piece of cardboard. Leave the CPU, leave one dimm and the vid card. Clear the CMOS again, connect the PSU and try to start the board.

C200 M1 PSU Fan speed varies

I have a C200 M1 running 1.4(3p), I am noticing some performance issues with this server, it just seems slow. I went to it physically and you can hear the PSU fans spin up and slow down every few seconds. Within an SSH to the CIMC I am seeing both fans vary from 2K to 7K RPMs every 3-5 seconds. Here are the PSU details:
ucs-c2xx-m1 /chassis # show psu detail
Name PSU1:
    In. Power (Watts): 87
    Out. Power (Watts): 650
    Firmware : R0E
    Status : Present
    Product ID : SUNNY651AM
Name PSU2:
    In. Power (Watts): 98
    Out. Power (Watts): 650
    Firmware : R0E
    Status : Present
    Product ID : SUNNY651AM
Here you can see the speed differences:
ucs-c2xx-m1 /sensor # show fan
Name                 Sensor Status        Reading    Units      Min. Warning    Max. Warning    Min. Failure    Max. Failure
PSU1_FAN_1           Normal               3072       RPM        N/A             N/A             N/A             N/A
PSU2_FAN_1           Normal               2048       RPM        N/A             N/A             N/A             N/A
W793_FAN1_TACH1      Normal               5700       RPM        N/A             N/A             800             N/A
W793_FAN1_TACH2      Normal               5500       RPM        N/A             N/A             800             N/A
W793_FAN2_TACH1      Normal               5800       RPM        N/A             N/A             800             N/A
W793_FAN2_TACH2      Normal               5500       RPM        N/A             N/A             800             N/A
W793_FAN3_TACH1      Normal               6000       RPM        N/A             N/A             800             N/A
W793_FAN3_TACH2      Normal               5600       RPM        N/A             N/A             800             N/A
W793_FAN4_TACH1      Normal               5800       RPM        N/A             N/A             800             N/A
W793_FAN4_TACH2      Normal               5500       RPM        N/A             N/A             800             N/A
W793_FAN5_TACH1      Normal               5900       RPM        N/A             N/A             800             N/A
W793_FAN5_TACH2      Normal               5300       RPM        N/A             N/A             800             N/A
ucs-c2xx-m1 /sensor # show fan
Name                 Sensor Status        Reading    Units      Min. Warning    Max. Warning    Min. Failure    Max. Failure
PSU1_FAN_1           Normal               6784       RPM        N/A             N/A             N/A             N/A
PSU2_FAN_1           Normal               7360       RPM        N/A             N/A             N/A             N/A
W793_FAN1_TACH1      Normal               5700       RPM        N/A             N/A             800             N/A
W793_FAN1_TACH2      Normal               5500       RPM        N/A             N/A             800             N/A
W793_FAN2_TACH1      Normal               5800       RPM        N/A             N/A             800             N/A
W793_FAN2_TACH2      Normal               5500       RPM        N/A             N/A             800             N/A
W793_FAN3_TACH1      Normal               5900       RPM        N/A             N/A             800             N/A
W793_FAN3_TACH2      Normal               5600       RPM        N/A             N/A             800             N/A
W793_FAN4_TACH1      Normal               5800       RPM        N/A             N/A             800             N/A
W793_FAN4_TACH2      Normal               5600       RPM        N/A             N/A             800             N/A
W793_FAN5_TACH1      Normal               5900       RPM        N/A             N/A             800             N/A
W793_FAN5_TACH2      Normal               5300       RPM        N/A             N/A             800             N/A
This server was running firmware 1.0(2) when I first found this issue, I have since upgraded it to the lastest code. I have done a full shutdown and removed the PSUs and let it sit for a few minutes.
When the fan speeds are low, the CPU performance is very low, VMs running on it are slow. Any thoughts??
Thanks.

Running ESXi 4.1 348481
Memory is running in Performance Mode
I have run the latest HUU with option 8 to upgrade all
Here are the outputs requested, this server has been running for a while with a single power supply connected, hence the multiple errors reflecting that.
ucs-c2xx-m1# scope fault
ucs-c2xx-m1 /fault # show discrete-alarm
ucs-c2xx-m1 /fault # top
ucs-c2xx-m1# scope sensor
ucs-c2xx-m1 /sensor # show temperature
Name                      Sensor Status Reading    Units      Min. Warning Max. Warning Min. Failure Max. Failure
IOH_TEMP_SENS             Normal         45.0       C          N/A          80.0         N/A          85.0
P2_TEMP_SENS              Normal         55.0       C          N/A          87.0         N/A          92.0
P1_TEMP_SENS              Normal         49.5       C          N/A          87.0         N/A          92.0
DDR3_P2_D1_TMP            Normal         29.0       C          N/A          68.0         N/A          70.0
DDR3_P2_E1_TMP            Normal         30.0       C          N/A          68.0         N/A          70.0
DDR3_P2_F1_TMP            Normal         29.0       C          N/A          68.0         N/A          70.0
DDR3_P1_A1_TMP            Normal         35.0       C          N/A          68.0         N/A          70.0
DDR3_P1_B1_TMP            Normal         34.0       C          N/A          68.0         N/A          70.0
DDR3_P1_C1_TMP            Normal         32.0       C          N/A          68.0         N/A          70.0
PSU1_TEMP_1               Normal         40.0       C          N/A          60.0         N/A          65.0
PSU2_TEMP_1               Normal         40.0       C          N/A          60.0         N/A          65.0
FP_AMBIENT_TEMP           Normal         24.0       C          N/A          40.0         N/A          45.0
ucs-c2xx-m1 /sensor # top
ucs-c2xx-m1# scope sel
ucs-c2xx-m1 /sel # show entries | grep Critical
2012-12-17 22:09:14 Critical      "FRU_RAM SEL_FULLNESS: System Event sensor for FRU_RAM, failure event, Upper Critical going high                          (85 > 80 ) was asserted"
2012-12-17 22:05:25 Critical      "FRU_RAM SEL_FULLNESS: System Event sensor for FRU_RAM, failure event, Upper Critical going high                          (84 > 80 ) was asserted"
[System Boot]       Critical      "FRU_RAM SEL_FULLNESS: System Event sensor for FRU_RAM, failure event, Upper Critical going high                          (83 > 80 ) was asserted"
[System Boot]       Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
[System Boot]       Critical      "FRU_RAM SEL_FULLNESS: System Event sensor for FRU_RAM, failure event, Upper Critical going high                          (80 > 80 ) was asserted"
2012-12-17 20:16:31 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-12-17 19:34:47 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-12-17 19:34:47 Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
2012-12-17 19:34:05 Critical      "FRU_RAM SEL_FULLNESS: System Event sensor for FRU_RAM, failure event, Upper Critical going high                          (80 > 80 ) was asserted"
2012-12-17 19:33:28 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-12-17 19:33:28 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
2012-12-05 20:22:41 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
[System Boot]       Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
[System Boot]       Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-11-05 21:43:11 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-11-05 21:43:11 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
2012-06-11 14:51:35 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-05-03 10:59:49 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-05-02 16:16:45 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2012-05-02 16:16:44 Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
2012-02-02 14:03:57 Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
2012-02-02 14:03:52 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
[System Boot]       Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
[System Boot]       Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-12-21 13:55:17 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-12-21 13:55:16 Critical      "PSU1 PSU1_STATUS: Power Supply sensor for PSU1, Power Supply input lost (AC/DC) was asserted"
[System Boot]       Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
[System Boot]       Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-09-30 10:02:39 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-09-30 10:02:39 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
2011-09-25 13:31:33 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-09-25 13:31:33 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
2011-09-24 13:11:31 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
2011-09-24 13:11:31 Critical      "PSU2 PSU2_STATUS: Power Supply sensor for PSU2, Power Supply input lost (AC/DC) was asserted"
2011-09-20 14:28:02 Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"
[System Boot]       Critical      "PSU_REDUNDANCY: PS Redundancy sensor, Redundancy Lost was asserted"

Msi pro-e mb possibly keeping psu fan on?

Hello all, fresh i7920 build with msi pro-e mb, corsair xms3 6gb, and a corsair tx750w psu. The problem i'm having is when i power down the system for the night the psu fan will continue to run all night long even though the system if off(not in sleep or hibernate). I am guessing its the psu or the mb or maybe even a bios setting i'm overlooking? Any suggestions or feedback would be greatly appreciated, thanks in advance.

Hmmm, Another experiment to try. Turn off the system and do what I said before with unplugging the PSU and draining the capacitors. Now, unplug the SATA connector to your HDDs and the Power connectors to the HDDs. You can leave the ODDs connected. Re-plug in the PSU with no HDDs connected or powered. Turn on the PSU and turn on the computer. You should get a blinking cursor or some message. Turn off the computer by the power switch. Does the fan still run?
If the fan still runs, do you have access to another computer or another PSU? You could try this PSU on another computer, yours or a friends to see if it does the same thing, or borrow another PSU and see it that fan runs on your PRO-E when the machine is off.

Mac Pro 1.1 How to control PSU fan

Dear Users
I have an upgraded (2 x X5355 8 core) Mac Pro 1.1 running 10.7.4. I routinely use SMCFanControl (the latest version) to ramp up the fans when I am running long, CPU-intensive jobs. However, SMCFanControl only changes three of the four fans - the PSU fan remains stuck on 600rpm, regardless of the settings. My PSU is getting pretty hot - 70+C, so I am looking for a way of cranking it up. Any suggestions will be greatfully received.
Thanks BB

BiscuitBarrel wrote:
Dear Users
I have an upgraded (2 x X5355 8 core) Mac Pro 1.1 running 10.7.4. I routinely use SMCFanControl (the latest version) to ramp up the fans when I am running long, CPU-intensive jobs. However, SMCFanControl only changes three of the four fans - the PSU fan remains stuck on 600rpm, regardless of the settings...
That's a good question. It's been a while since I've run my 1,1 Mac Pro, but I remember that smcFanControl could change everything but the PS fan (which is at the front of the PS brick, right behind the DVD drives - I just took the cover off and doublechecked). On my current Mac Pro, which has the same DVD/PSU layout, smcFanControl can control all the fans.

Idle Fan speed 4400 RPM after fan replacement

Several months ago the left side fan on my MBP died as the result of a worn bearing. The computer is covered under Apple Care so I sent it in to have the fan replaced. Ever since the fan was replaced the idle speed on both fans is in excess of 4K rpm even when the CPU shows minimal activity. SMC fan control is set to 2K rpm. iStat Nano widget displays temperature at 120 Degrees Fahrenheit and fan speed at 4500K. I took my MBP back to my local Apple authorized service center and told them what was occurring since having the fan replaced. From Hardin Apple service center in Arlington my MBP was shipped to Houston Texas where Apple Service Technicians replaced the Logic board. I have since reset the PMU by removing the battery and holding down the power button for 5 seconds. I have also run the Apple Hardware Diagnostic test using the install disc which showed no hardware malfunctions.
With the CPU 95% idle the fans should not be running anywhere near 4K. Despite two trips to Apple Service my MPB still has a fan probably which is not only annoying because of the increased noise but it is affecting my battery life as well. If anyone has any ideas as to how to fix this problem which I have not already attempted please post them. I am hesitant to send my MBP back for more service at this time due to their failure to fix the problem the first time or check the results. They were aware of the problem when I sent it in for service and when they returned it to me the same problem persisted. This type of service does not inspire customer confidence.

I'd be inclined to try an "archive and install" of the OS, Jason, and leave off any third party "add ons" like SMC fan control for the moment.
Alternatively if you have an external HD then you could try installing a "clean" copy of the OS on this and using it as the boot drive, to see if this overcomes the problem
There are OS software elements to the process of fanspeed control and if these are corrupted then the fans are likely to run at "failsafe" speed.
Another possibility may be that a temp sensor hasn't been properly re-connected, again resulting in "failsafe" sped operation.
Rod

T43p Cooling Fan Replacement

Hi all,
Have a noisey cooling fan on my T43p-2686-DHU. So, have puchased from Lenovo part 26R9074 "long fan 24".
Before, I open my Thinkpad for the first time. Was wondering if someone has instructions on how to do this repair, pointer to pitfalls, or comments.
Thanks in advance,
Atul
Solved!
Go to Solution.

http://www-307.ibm.com/pc/support/site.wss/MIGR-58791.html
this manual will show all the steps involved. The technicians at depot also follow this manual for most repair processes.
Fan replacement is fairly straight forward.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

MOVED: MS 875P Neo System Bd Fan replacement...

This topic has been moved to Intel P4/Celeron boards.
https://forum-en.msi.com/index.php?topic=122757.0

Read this: >> Can anyone recommend me a Northbridge fan replacement? <<

MDD PSU FAN REPLACEMENT

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