Capacitors are the number one culprit of most older Macintosh issues. Getting handy with the soldering iron is always beneficial, but rest assured there are plenty of folks out there to help if you need it. We have several on this forum who re-cap logic boards (not sure if they'd do analog boards) and I'm sure if you have a friend in an electronics field who was around when these older machines were popular you'd be fine too.

This brings me to a suggestion for the soldering gurus out there--why not make some how-to videos for these forums or perhaps our wiki?