I don't know how much they changed from the 9000 to the 895 but my 895 has 4 lights, two on each end of the display. They look fixable but could be a pain in the butt to remove and replace. I have 3 895s with bulbs out that I need to get to.
Mine is all or none...so I figure its a bad driver or connection. I use to be able to tap the top of the scanner at times and it would come one (and seemed to improve sensitivity) but that hasn't happened in ahwile
They get intermittent after a while, then just fail. I've replaced them before in my 9000xlt and they aren't hard to do. Sometimes just cleaning their mount contacts will suffice. You just have to remove the front face of the scanner. I got mine direct from Uniden parts a few years ago. They weren't expensive at all.