I'm getting the impression that examining the visible (top and bottom) circuit traces
might be a better indication of what's "missing". If many chips lack +/-
connections, that would indicate there are hidden ground planes.
?If my buddy only got me schematics, I'm sure I could figure out the rest. I don't
have any skinny circuit board material that's as large as those boards I don't
think. But regardless the choice of an adhesive isn't all that critical, right? *ducks
for cover*