Run OFW heat spreader test

Richard A. Smith richard at
Mon Jan 23 07:54:23 EST 2012

On 01/23/2012 01:32 AM, Sridhar Dhanapalan wrote:

> On 23 January 2012 17:20, James Cameron<quozl at>  wrote:
>> I thought you were doing this test to detect early units that may have
>> a failed heat spreader, and you were doing it at the time of reflashing
>> because that's when you had some control.
> Yes, that's the primary reason. Our initial batch of XO-1.5s have an
> inefficient heat spreader. They've been burning out, and replacing the
> motherboards is getting expensive and time consuming. We'd like to
> detect potentially faulty units early, and recommend a heat spreader
> change for them.

Hmmm... Something else is the problem here.  You can't damage the 
processor via thermal overload because it has an automatic clock back 
off.  If you have motherboards that are failing its not due to a bad 
heat spreader.  At worst all you would get would be hangs.

Can you acquire the serial number of the failed motherboards or is that 
not lost?

Richard A. Smith  <richard at>
One Laptop per Child

More information about the Devel mailing list