Cognitive Dissonance and Linux

[Tyler Aviss]

BGA seems to have been the case of a lot of premature death in various
gaming consoles too. I know that a *LOT* of the 360's had GPU failures
due to heat causing the chip to lose connection. You could have the
chip reballed and it would work again (a temp fix was to actually
overheat the unit intentionally near the GPU, causing a temporary
reflow, which actually did work but fried things worse over time).

I believe the PS3 had some similar issues, though not nearly as bad as the 360.
For myself, I've wondered what the advantage of such a setup is VS the
old "slot-and-pin" style we've come to know and love.


On Thu, Nov 11, 2010 at 8:55 AM, James Knott <james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org> wrote:
> Lennart Sorensen wrote:
>>
>> Everything is going to BGA which is really not something
>> you go replace.
>
> Even "J" leads, which curl under the chip can be "fun".  I've never had
> occasion to work with BGA.  The SMT leads that extend out from the chip are
> fairly easy to work with, even with over 100 of them.  You just have to be
> careful.  The easiest way to remove one of those is to simply use a utility
> knife to cut all the leads, then wipe them off the board with a soldering
> iron.  Then place the replacement in position, with a small amount of liquid
> flux under the leads, and solder an opposite pair of pins and then, after
> verifying the correct placement, solder the rest.  I got to the point where
> I could change one of those 100+ pin chips in about 10 minutes.  The J lead
> chips require a special removal tool that heats all the pins at the same
> time.
>
>
>
>
>
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-- 
Tyler Aviss
Systems Support
LPIC/LPIC-2/DCTS/CLA

“It can takes months to gain a customer, but only seconds to lose one"
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TLUG requests: Linux topics, No HTML, wrap text below 80 columns
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