I recently turned X-band off on my 8500 X50. Now it appears that it won't pick up laser either. Laser band is on, but a month or so ago I went by a LEO who was pointing a laser gun right at me. Not a peep. And today we drove right past Indy airport on I-70 where it *always* gives me several laser falses. Again, not a peep. Is it possible for just the laser portion to fail? I know the other two bands are working because I've gotten several hits recently.