On Sat, 23 Apr 2011 11:43:48 +0200, "Uffe Bærentsen"
wrote:

http://802.11junk.com/jeffl/crud/toshiba-rot-02.jpg

From what I can see the PCB is flipped over (upside down).

Correct. It's a bottom view.

Liquid (cola?) might have landed on the top surface and then it is wicked
through the PCB through the via's to the bottom side where it gets trapped
in between the PCB and the plastic covering.

Maybe. There's another sheet of plastic on the other side with holes
for connectors and mounting studs. I didn't see anything odd looking
through the plastic, but I didn't peel it off yet. When I get back to
the office on Monday, I'll take a closer look after I peel off all the
plastic.

Have seen almost the same with a Logitech keyboard.
The liquid that landed on the top surface was free to evaporate.
The liquid on the bottom surface was trapped and could etch away :-(

Good point, if it happened that way. I'll double check.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558