i've recently bought the yellow 30 yeas anniversary rangeman, and I've noticed that in dark place there is a little dust sign under the dash of the date ("5 - 9" so under the - where the date is displayed)
it cannot be seen in sun light or a lighted room, only in poor light conditions and when you turn on the light LED.
I have attached some photos, you can see it only in the photo with the light on.
Do I need to use the warranty?
could you check your Rangeman(s) in a dark room?