T60 shuts down

[hhmcsv]

Now and then my T60 will shut down unexpectedly, just like a forced shutdown, i.e. immediately a black screen. In the log it is mentioned as Kernel power, id41. Happens randomly, over the last year 24 times, i.e. once every two weeks but with no fixed pattern.
After the shutdown, the T60 will start normally and function without any anomalities.
Any ideas about the cause of this, HW or SW (Win8.1) ?

[Cigarguy]

Bought a used T61 that did exactly this but more frequently. Turned out the previous owner put a screw into the keyboard drain hole instead of the screw hold. The screw was long enough to short the MB and caused an immediate shutdown. It was a T61p that I bought for $40 mainly for the 4 GB memory and T9300 CPU. After fixing the short, it's been working fine ever since.

So, I suspect there's a short somewhere. Try pressing on various parts of the chasis. Could also be a battery problem too.

[Morten]

Could be your thermal paste is dried out. I had one that did that when running cpu stress test, and when performing windows updates. If it happens when windows update or something else is utilizing the CPU, it could be the paste.

[hhmcsv]

Thank you very much for the suggestions.
The first suggestion, that some screw was doing a short somewhere could be discounted as I have had the keyboard and palmrest taken off several times - and the length of the screws are as they should be according to the HMM.
Now, after a week with no shutdowns, it happened again yesterday. And this time it had consequences as to the loss of the entire content of my inbox in Thunderbird mailprogram. But strange enough there was no loss in my other folders in Thunderbird.
But the inbox was open at the time.
But when I did the usual restart, it was obvious that it was in a middle of a Windows update.
So as I never have had the fan assembly taken out, I figured that this could be the time for a fan lubrication and application of new thermal paste. I replaced also one of the thermal pads.
This was done 5 mins. ago, so now I keep my fingers crossed that this little operation would solve the problem - leading up to the birthday of the T60 in march - 7 years

[hhmcsv]

So, after a day I had a shutdown afterall. Temperatures right after startup (which was normal) was about 70 deg. C.
So my fault is obvious not overheating

[hhmcsv]

Could this type of random shutdown with the "Kernel power"-error be caused by the SSD?

[hhmcsv]

As you may see from the error log below, these shutdowns occur at a very irregular pattern. A few times twice a day, at other times with 3 months between.
Any ideas as to why?


Kritisk 16-02-2014 15:00:09 Kernel-Power 41 (63)
Kritisk 13-02-2014 14:57:26 Kernel-Power 41 (63)
Kritisk 07-02-2014 10:35:30 Kernel-Power 41 (63)
Kritisk 27-01-2014 17:31:37 Kernel-Power 41 (63)
Kritisk 25-01-2014 11:35:43 Kernel-Power 41 (63)
Kritisk 25-01-2014 11:26:39 Kernel-Power 41 (63)
Kritisk 17-01-2014 14:09:12 Kernel-Power 41 (63)
Kritisk 26-12-2013 23:58:57 Kernel-Power 41 (63)
Kritisk 25-12-2013 15:09:52 Kernel-Power 41 (63)
Kritisk 11-12-2013 15:31:57 Kernel-Power 41 (63)
Kritisk 08-12-2013 23:25:49 Kernel-Power 41 (63)
Kritisk 21-11-2013 23:43:51 Kernel-Power 41 (63)
Kritisk 20-11-2013 17:04:40 Kernel-Power 41 (63)
Kritisk 01-11-2013 17:17:09 Kernel-Power 41 (63)
Kritisk 01-11-2013 12:04:06 Kernel-Power 41 (63)
Kritisk 31-10-2013 10:34:08 Kernel-Power 41 (63)
Kritisk 26-10-2013 13:56:37 Kernel-Power 41 (63)
Kritisk 24-10-2013 23:38:43 Kernel-Power 41 (63)
Kritisk 15-10-2013 13:31:07 Kernel-Power 41 (63)
Kritisk 14-10-2013 19:25:33 Kernel-Power 41 (63)
Kritisk 07-10-2013 23:38:33 Kernel-Power 41 (63)
Kritisk 02-10-2013 20:32:56 Kernel-Power 41 (63)
Kritisk 27-09-2013 11:20:09 Kernel-Power 41 (63)
Kritisk 19-09-2013 08:20:00 Kernel-Power 41 (63)
Kritisk 05-09-2013 21:47:02 Kernel-Power 41 (63)
Kritisk 28-05-2013 17:49:31 Kernel-Power 41 (63)
Kritisk 04-05-2013 19:53:36 Kernel-Power 41 (63)
Kritisk 08-02-2013 13:46:06 Kernel-Power 41 (63)
Kritisk 30-01-2013 11:59:32 Kernel-Power 41 (63)
Kritisk 20-12-2012 16:22:45 Kernel-Power 41 (63)