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Thinkpad just shuts down

Discussion in 'Laptops' started by BobH, Jul 27, 2004.

  1. BobH

    BobH Guest

    Thinkpad T20, model 2647 64U, boots fine but then in five, or ten, or
    120 minutes just freezes and then a minute or two later the screen
    goes blank, then a minute or two after that the whole thing shuts
    down. Power light stays on. I am running off of AC power so it's not
    likely a power supply.

    Someone said it might be the CMOS battery but I find that hard to
    believe (still, I ordered one) as that merely keeps the BIOS clock in

    Seems like it might be an overheating problem, but how can I check?

    Any help would be appreciated.


    BobH, Jul 27, 2004
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  2. The CMOS battery does more than that, but is probably not the problem
    Heat is a good guess. The CPU has a "pad" between it and the fan, and
    there is too large a gap on this model.
    Try re-seating and insulating the CPU, use silver themal grease, and
    some folks have put a brass or copper shim between the CPU and the
    heat sink to close the gap. This may cure it, the pad may have
    Bruce Markowitz, Jul 28, 2004
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  3. BobH

    Ian S Guest

    Mobilemeter is a great little utility for tracking your processor speed,
    temperature and power usage in real time - it requires Win2K or XP.

    Does the problem occur when using battery power or alternately if you adjust
    processor speed lower by using a battery power scheme when under AC, does
    the lockup/shutdown still occur? This was a problem I had with my T22 -
    required a MB replacement.
    Ian S, Jul 28, 2004
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