Quote Originally Posted by xlx View Post
...I don't have any false laser problem so far with my new 9500ix either (3 months)... but I don't quite trust these things as I'm keeping my good 8500 X50 just in case my 9500ix starts doing the same kinda thing. Seeing from this thread, it seems possible to be plagued by the same problem again... yikes...
Don't worry about your 9500ix acting up on laser like your older 8500's did. The laser circuitry design is totally different, and more importantly the laser circuit shielding is basically short and square rather than the older really long and narrow design used in the 8500's. It was that long and narrow design which over time would occasionally develop small gaps between the shield and the circuit board. Those small gaps allowed RF interference to get into the heavily amplified laser circuitry and presto -- random false laser alerts which would slowly get more frequent over time as the gaps got slightly larger due to expansion and contraction caused by daily temperature changes. A good while back I made a detailed post showing how to repair this 8500 specific problem.