31 May
2010
31 May
'10
11:06 a.m.
The A500 works fine with this card installed. I did
more checking and it
appears that there's a short between +5 and ground. I removed all the
Hmmm.. So the 5V line i nthe computer must still be present. And if
there's a short on the expanison board, then that 5V must be being
droipped somewhere. An this coupld mean a track has burnt out somewhere
(possibly on an internal layer of the expanison board.
After finding the short, you may have some jumpering to do :-)
chips to eliminate them as a potential cause and
it's still reading as
shorted. The only components left on the board at this point are the
resistors, a pair of electrolytic caps and a pair of what I think are
tantalum caps.
I am suprisedthere aren't some small ceramic decoupling capacitors too.
The next thing I would do is desolder those electrolytics and tants and
see if the short goes away. It's only 8 connections total :-)
Thanks for the suggestions Tony.
No problem. That's what the list's for, isn't it...
[Expecting the flames tht I am being egotistical by posting help here...]
-tony