high rate of broken devices even on prodction test.

joerg at openmoko.org joerg at openmoko.org
Mon Apr 21 11:08:18 CEST 2008

Am Fr  18. April 2008 schrieb joerg at openmoko.org:
> Am Fr  18. April 2008 schrieb Andy Green:
> > | If we still see chips popping, it's not worse than before - just then 
> > | 50633 blows up instead of the 9711. ;-)
> > 
> > I agree tough to see how to fix it when we didn't see a dead board.  And
> > I NEVER saw a dead board that I worked on or heard about that failure
> > mode (it is a very noticable failure mode!  No USB power!) except from
> > the factory.  So it needs a really unusual condition to make this
> > trouble I think.
> > 
> > I don't have a better idea than Allen's 0R plan, but it isn't very
> > satisfying not to understand it.
> > 
> > -Andy
> > 
> 100% ACK. (Just it's our plan, not Allen's ;-)
> Let's wait and see what comes here from fab next week (50 pcs)

New interesting info: one board allegedly fried on OM-office lab when testing 
on a quite plain computer, labeled DM-1 IIRC. Either this is mere test 
software that's causing the problem, or we have SMT problems on some boards.

the 50 new candidates are scheduled for Wednesday.


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