🚀 go-pugleaf

dlundste@ncube.com (Duane S. Lundsten) writes:
>2.  Is it true that you can't so much as replace a RAM chip on one of
>these boards?  And if it's true, why would anyone design a board that
>way?  

  Well, its possible to replace chips with extreme care by piggy-backing.
First you carefully cut the chip away from its pins, as close to the chip
body as possible.  This leaves a forest of legs sticking up.  Glue a small
spacer in so that the replacement chip sits high off the board with its pins
firmly against the old pins, with enough space for a clip-on heat sink to be
clipped to the bottom of the old pin during the soldering process. Now
solder the pins together, being carefull to not let too much heat leak down
the old pin into the board...
  You see what I mean about ``extreme care''?

  Of course, if you add too much capacitance, you still lose.

--dave
-- 
David Collier-Brown,  | davecb@Nexus.YorkU.CA, ...!yunexus!davecb or
72 Abitibi Ave.,      | {toronto area...}lethe!dave 
Willowdale, Ontario,  | "And the next 8 man-months came up like
CANADA. 416-223-8968  |   thunder across the bay" --david kipling