Diagnosing Sticking Piano Keys

There are a number of issues that could cause a piano key to stick.  This video goes through some of the more common causes of sticking piano keys and how to diagnose the problem.  This video is an overview, but we do have individual videos which each go into more detail about how to fix the problems outlined in this video:

Fixing Sticking Piano Keys by Adjusting the Keyslip
Piano Key Bushing Replacement
Cleaning & Polishing Keypins
Piano Jack Spring Replacement
Fixing a Sticking Jack
Piano Bridle Strap Replacement
Broken Piano Hammer Shank Repair
Spinet Piano Lifter Elbow Replacement