Originally Posted by Ken Maltby
Unless you have opened the case I can't see how you could effect the IR path, in any
way. Blowing air on the outside seems an unlikely fix.
That's something that can easily happen on any infrared reader, you don't need to open up the case to do it. Having it on a Sony for over 2 years, a bug crawling across the screen can flip pages, a tiny food or dust particle stuck along the frame can totally mess up the IR as well. The easiest fix is to use canned air and blow all around the frame, or use a very soft bristled brush.