Quote Originally Posted by ssayer View Post
OR put a case on it to shield the offending component from the light source...
Yea, I was gonna say. Stopping light would be an easy solution. Here's a great vid exploring the effect, it's cause, and preventing it using some blue tack: https://www.youtube.com/watch?v=SrDfRCi1UV0

An opaque epoxy would probably also work.