Mr. Fix-It

The staff of the gym has drawn on my years of upbringing by my father, who was an electrical engineer and could fix our TV sets himself (at least until they did away with vacuum tubes). They asked me to fix one of the TV's whose picture gets compressed every so often.

Alternately, maybe it's just because I'm the only one tall enough to reach up to the TV, which is suspended from the ceiling, and smack the side of it.