21 Aug
2012
21 Aug
'12
11:38 a.m.
On 08/21/2012 07:53 PM, Tony Duell wrote:
The r-pi is both a computer, and a component.
Even if you had BGA rework possibilities, repair would be costlier than replacement.
There is such a thing as economics...
Jos
Briefly
looking at the R-Pi, it at least party meets your goals of
maintainable. The hardware
It's basically 2 chips IIRC (the main one, which is
in fact a multichip
mnodule) and the ethernet interface. So 'repair's is likely to involve
replacign that main IC, in a BGA packaeg :-( If yoou can get one.
AFIAK you can't get a fulldata sheet for that main 'IC'. Some data has
been released, but there is no full specification of the graphics processor.
schematics are online, the parts are (at least
mostly available): the
parenthetical qualification
is because I don't know whether the broadcom chip is available (I guess
not ine onesies ...). I
also don't have the kit here to swap that one out.
That is the problem. I
don't yet have BGA rewok facilities either. The
user port (a 26 pin header) is wired stright to that IC, which strikes me
as poor design... One slip and you are looking for an very hard to find
IC and trying to work out how to solder it on.
-tony