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need advice on soldering on my n800!
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xandor
2008-09-17 , 16:57
Posts: 33 | Thanked: 1 time | Joined on May 2007 @ San Miguel de Allende, MX
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19
Briand,
Yes, what you say is correct, although I'm not sure why you are focusing on X- Y- (26,7) at the expense of X+,Y+(24,25). And, naturally, these 4 pins are bordered on BOTH sides by a ground pin...
I've tried doing a bit of tracing, including on that connector, but I think I'm getting false continuity signals due to caps getting charged, if that makes any sense.
That connector does NOT have any markings ID'ing the numbering.
Again, I was hoping to ID the parts via somebody who has access to a hard copy with a clear map on the final page, which would just show everything. I can ALMOST make out the IDs on it but not
quite
...! (again, F3, maybe also E3, on the grid). I THINK it's two resistors sandwiched by two caps on my damaged row--pretty sure I can discern the C's and R's but not the numbering.
I must say, though, that just after I made that last posting, I noticed that the OTHER side (right-hand on the schem) of those resistors and caps connect to 4 touch terminals on the OMAP chip, so there probably is indeed a pass-through to the other side of the board (even though this would seem to be underneath the headphone jack!), and this might make my task, given the state of the pads as others have accurately commented upon, nearly impossible (my goodness, am I admitting that? No...).
But MAYBE I'm lucky and the three items I'm missing are NOT at the points that pass through (but how to tell...hmmm...).
Meanwhile I'm just happily obsessing along...
The tablet IS useful for listening to BBC (and not much else) in its present state, though (assuming it still is the same as before this last disassembly
).
And, hey, thanks a lot for clarifying the values on those "10R" resistors, etc.! Really appreciate your interest in such an obscure topic!
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