Your camera has what are called 'common failure', or 'common wear' parts in the mechanics that are in need of replacement. When these parts wear over time and with use the alignments begin to drift. The camcorder was designed to compensate for these drifts, but when these parts start going bad, the camcorder cannot compensate any longer, and that’s when you'll have mechanical errors, or you'll see a problem in the picture, or in the sound, or a combination of each. These problems are directly related to worn/ failed parts in the mechanics.
Instead of changing one or two parts that are currently defective, we replace ALL the parts that normally wear out, or commonly fail. The mechanism is broken down to remove the defective parts. It's a time consuming job - done with great care. While the chassis is broken down we remove old dried grease and replace it with fresh. Once the parts are properly replaced, alignments are performed to your camera back into factory spec.