The zoom in button on my ancient Garmin Zumo 550 GPS popped out. On ADVRider I had come across a post by a guy from the Netherlands who sold replacement button strips for these units. I bought the strips and have had them lying around here for ages now.

This evening, in a moment of clarity, I decided to try to repair the unit. I honestly thought it would be more difficult than it was. 

Check out the blog tab for a complete description of the process.