You have definitely tried to troubleshoot this problem in the proper manner, and have covered all the usual suspects that can cause this problem. You can try removing the heatsink/fan assembly from the CPU, cleaning up the old thermal grease and applying some new grease, but from my experience this isn't going to fix it. When these systems start freezing like this, the systemboard is 'flakey' and the only fix is a systemboard replacement. I have had MANY T2x series machines that eventually develop this symptom, and that has been the only fix I have found.
Eric Giles On 4/4/09 2:26 AM, "[email protected]" <[email protected]> wrote: > Hello guys, > > I have three T21-Thinkpads with three different error-descriptions, this > one here is 1/3: > > _Description:______________#1: T21-800 freezes____________________________ > > The T21 in question boots, works fine, but after an unrecognized period of > time freezes. This results in the system "hanging" with the ventilation on. > However, I can not find any hot area besides the usual one: the HDD. > > This is what I have tried so far: > - reinstalled the entire WinXP SP3 system > - removed/replaced RAM -> no result, system also hangs with other RAM > - removed modem/lan card-> no result, system also hangs without that card > - removed dvd-drive -> no result, system also hangs without that drive > - tore T21 apart and cleaned the ventilation-unit -> nothing changed either > > Another thing that I recognized today is that the system does not run > smoothly, two examples: > 1) If you move the mouse, the mouse sometimes stops its move and then > appears where it should arrive. Means: It does not move smoothly, it > jumps. > 2) If I run any Win-XP-default-screensaver, I see that the system stops > just as with the mouse and then continues. > > What I want to say is that this system starts to run "flocky" after some > while as if it would lose its correct "heart-beat". This odd behaviour > begins after approx. one hour running-time. The machine runs more and > more delayed and finally the ventilation starts and the system freezes. > > More and more I have the feeling that this is not a temperature or (over-) > heating issue, but a problem with the internal BUS. > > I hope you understand my humble description. > > What can I do to solve this problem? Which FRU part numbers are to change? > > I hope you can help me out and thank you in advance. > Many greetings! _______________________________________________ Thinkpad mailing list [email protected] http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
