08-11-2010 01:43 PM
Recently have had 3 systems in for service that had loud fan issue, mainly MT7483 A16 Thinkcentre M58p. Issue is the loud fan, no post, no beeps. I removed all cables from back, removed ram, removed the hard drive to get those out of the way, still does the loud fan. Reseated cables on the motherboard, then put in a different cpu, same, put in a different psu, same, replacing motherboards for all three of these, took these steps to narrow down to just the motherboard.
09-17-2010 06:39 AM
Haven't had too many more recently but the replacement of the motherboards on these resolved most of the issues relating to the constant fan running 100 percent. The last three I worked on after I replaced the motherboard no loud fan running constantly, all working as normal now.
11-08-2010 09:54 PM
In regards to this issue, I've read through the whole thread and tbraden has mentioned that after doing a motherboard replacement, issue has been resolved.
For those who are still having issues, please fill up the following information needed and I will cascade it to engineering for their assistance on this.
12-09-2010 07:09 AM
I apologize I have not responded in awhile, get caught up in the work. Here's some general information I can provide:
* Model - 7483A16
* BIOS version - Vanilla, 5CKt68A, or later
* OS loaded (ex. Win 7 64bit) - Windows xp
* Lenovo default OS? Custom windows xp image
* Updates from TVSU completed? - ....?
* Updates from Windows Updates? - We send updates manually
* Power Manager Version - ....?
* Power Management Driver - ....?
* Fan Speed - I don't have any tools to check this at this time
* What software used to check speed - I don't have any tools to check this at this time
* Processor Temp - I don't have any tools to check this at this time
* HDD Temp - I don't have any tools to check this at this time
* RAM installed (brand and 1 x 4gb, 1 x 2gb, 2 x 2gb?) - slot 1 = 2GB slot 3 = 1GB
* How long the PC is running before the fan increases speed - varies, issue can occur 15 seconds after you plug power cable in, to after its been on overnight and is turned off, it turns itself back on and is loud. Quite similar to no video no post sometimes,
* Any 3rd party parts which has been added into the PC.
Far as I know all parts are from lenovo as we have a lease through lenovo.
12-09-2010 10:11 PM
A few weeks ago after again calling IBM Support and getting another Incident Number, I was asked to
have an IBM Customer Engineer replace the Motherboard and Fan/Heatsink assembly. I made arrangements
with "Steve" to come to my officeand I would bring in a display, keyboard, mouse ,and my
7483-W59 (M58p) system unit. "Steve" did a great job and I noticed that there was a new Heatsink on one
of the Intel controller chips (Memory Controller, I believe). This, of course, meant a new part numbered
motherboard. I mentioned that I would comment here regarding closure on the fan-speedup issue. I'm PLEASED to
report that after many hours, it appears that the fan controls have been appropriately applied with this new motherboard.
The M58p uses Intel QST (Quiet System Technology) and it appears that QST is running OK here on that board.
As to the SpeedFan software reporting a "negative number" for the CPU die, it has been reported in a forum for
SpeedFan that the first Core number added to the Absolute Value of the "CPU" die value equals 100 and only the
Core "x" numbers should be used. End Of Story and a Happy One at that. Stay Cool!
12-16-2010 07:57 AM
Been on here recently as I've received another batch of fan issues. Most recent issue I proceeded with the following steps: Swapped in diff pair of ram, same loud fan, put in just single amount of ram, same thing, took out ram, same thing, moving past the ram, swapped out cpu, same thing, tested a different PSU for good measure, same thing, Tested a different motherboard, cpu, ram, same case, that works. Put original items back in case except a different motherboard, in this case it did the loud fan issue, which can be quite a bit frustrating to try and figure out what the offending part is as it would seem like I've swapped everything out. I don't get cases like this too often, but I did just ended up putting a whole different motherboard, cpu, ram. This was tested with only power cable plugged in from back, no usb connections on either front or back.
Issue: No post, no beeps, no video, loud fan, worked fine before, does same no usb connections connected and just power cable.
Issue resolution: Motherboard, CPU, Ram
12-29-2010 01:07 PM
I have 60 of this machines in a public library, and 9 of them have died, from overheated processors. Humm not god I will never, never buy or recommend IBM to nobody, by the way I also have 75 dell machines from 12 to 1 year old and none, none of then our out. Humm.
01-10-2011 07:03 PM - edited 01-13-2011 06:24 PM
Engineering has suggested the following.
Do let me know if step provided above helps.
edit comment - change some steps.