On Sun, 23 Apr 2006 15:49:06 -0500, "ampdoc" Gave
us:

Another factor to contend with on multilayer PCB's are the VIA's (some call
them feed-throughs) that rout traces through the board. If the metal has
been etched out of the VIA by corrosive action, then you have to take a very
small drill bit and clean out the thru-hole in the board an pass a small
wire through and solder it to the traces,

NEVER, I repeat NEVER "take a very small drill bit" to ANY of your
vias. Adding and soldering the wire is fine. Use FLUX for that
operation, NOT a friggin drill bit. That (drilling) would almost
ensure that there will be detached layers.

meaning a lot of work if many of
them are bad. Also if the PCB is more than 2 layers it may be impossible to
repair.

Drilling the ****ing thing will surely produce that result.

Also if you have heavy soil on a board or it is contaminated with Glycol
(CRT Coolant for PJTV's) you can wash it with an ammonia based cleaner then
rinse with distilled water. Windex works wonders :-)

It's a laptop, not a CRT.