http://img120.imageshack.us/img120/472/motherboarddrilled0mf9.jpg

Into C8 and C9 area you can take a look at those epoxy glue spots that hold capacitors firmly on mobo: they are circular, clearly visible and virtually unaccessible.

There are two videos on youtube inheriting macintosh II PCB assembly and infrared wave soldering. Love those 80's synthetized sound tracks