Replaced iPhone 5 Power Button

My Problem

My power button slowly became less and less responsive until it stopped working all-together.

My Fix

The repair was tedious (took apart the entire phone) but fun. The power button worked perfectly for a few days, but has since become slightly less responsive. Still much better than before though.

My Advice

The power button itself is such a simple part it probably doesn't need to be replaced. I think taking apart the phone and re-seeding the connections is what helped most.