[ltp] T61 system board (42w7872)

[Jason Brooks]

All compact devices suffer from this problem. All it takes is heat.
Could be environmental, could be from another peripheral such as a
battery. The nvidia problem is just thee most documented case. T42 and
t30 had this issue with the radeon 7500... so it isn't just a nvidia
problem.  There are devices such as rt & marvel bases soc chips in
routers that do this. Xbox 360 and 1st gen ps3. Even apple is not
immune the mac book had this problem usually referred to as the bad
logic board.  Most of the time it is preventable with maintenance.
Some times it isn't. It is the trade off for lower price and lighter
weight.

On Wed, Oct 26, 2011 at 2:28 PM, Paul Seelig <pseelig@rumbero.es> wrote:
> Both the FRU 42W7648 and 42W7872 mainboards come with integrated Intel
> graphics and don't suffer from any sich heat related issues. The nVIDIA
> based mainboard variants of the T61 which were produced before 08/2008
> typically die like flies because of bad soldering material used by nVIDIA
> for the production of the graphic chips.
>
> On 10/25/2011 09:42 PM, Jason Brooks wrote:
>>
>> There isn't a fuse on thee board it would be a resistor. Chances are
>> it is a chip on the motherboard that has deballed or gotten so hot the
>> solider has separated from the board. There are two options( or three
>> if you can reflow) new main board or get the board repaired by someone
>> who can reflow or reball the chip that has lost contact with the
>> board. The chips that typically do this are the graphics chips. They
>> get really hot for obvious reasons.
>>
>> Jay
>
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>



-- 
JaY