TMG has a really good point, in that PM's often resolve issues and help off-set total failure of parts/systems, while getting you intimate with the brick.
Looking for problems will end up being a self-fulfilling prophecy, and often the problems aren't true issues to deal with.
FWIW, If idle hands worry you, $14.00 of Deoxit and brushes to clean all electrical connectors and attachments will get you through the harsh winter. Good Luck, being fastidious is a good trait, but can certainly go overboard.