[ale] final plea for help (more kernel panic info)

[John Wells]

So you're implying that her chipset is overheating somehow?  What could
fail in a chip to cause it to overheat in this manner?  Broken paths that
lead to a build up of electrons (like a clog in a pipe)?  I'm not an EE,
so humor me ;-).

Thanks,

John

James P. Kinney III said:
> Also, chips are temperature sensitive. As the temp rises, the elctrons
> available to due the designed task increases until the average electron
> is above the barrier energy and ,WHOOSH, a cascade of current happens
> that makes no sense to the receiving buckets expecting only a few
> million per second. So it sends a WTF?! and that get amplified until the
> only data on the output pin is a very loud WTF?!?!?! And the system
> panics and dies.
>
> Spot cooling on a chip that is near the temperature failure point will
> avoid that problem. Likewise, a localized heat source (tube within a
> tube pumping near boiling water) is a great way to tip a chip over the
> edge while keeping the rest of the board at operating temps.
>
>
> On Sat, 2003-01-04 at 11:17, Doug McNash wrote:
>> It's a hardware thing.  Heat up the components and they
>> expand, cool down and they contract (ever so little) but
>> enough to short or open a circuit on a marginal solder
>> joint or internal chip connection.  The problem statement
>> describes 10-30 min of running time before failure.  So
>> some part of the system failing when it gets warm.  The
>> hair dryer just speeds the process and lets one isolate
>> the component.
>>
>> >Where the hell do you come up with these ideas?  Is there
>> >some sort of
>> >"Home Remedies for the PC" book I've overlooked?  ;-p
>> >
>> >John
>> >
>> >> Final test, get a hair
>> >> dryer and a can of compressed air. with the box running
>> >>, warm the board
>> >> from the back until it dies, reboot, use the air cans to
>> >>cool the
>> >> chipset and test again. If cooling the chipset with a
>> >>warm board
>> >> otherwise runs well, the chipset is bad.
>>
>> --
>> Doug McNash
>> dmcnash at smyrnacable.net
>> _______________________________________________
>> Ale mailing list
>> Ale at ale.org
>> http://www.ale.org/mailman/listinfo/ale
> --
> James P. Kinney III   \Changing the mobile computing world/
> President and CEO      \          one Linux user         /
> Local Net Solutions,LLC \           at a time.          /
> 770-493-8244             \.___________________________./
>
> GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
> <jkinney at localnetsolutions.com> Fingerprint = 3C9E 6366 54FC A3FE BA4D
> 0659 6190 ADC3 829C 6CA7



_______________________________________________
Ale mailing list
Ale at ale.org
http://www.ale.org/mailman/listinfo/ale