Agree with ManW about moving parts. Sorry my reference to amazon wasn't clear, I checked my amazon purchases to find out when I bought the player, it was 3 1/2 years ago.
I have two 4k players (Panny) and two blu ray players (Panny, Samsung). One of the 4k players I use much more than the others (I should probably rotate them) and this main player doesn't last more than 3-4 years. I buy the cheaper Panny players as the more expensive ones have features I wouldn't...
I had similar problems with one of my Panny 4k players last month (a cheaper model than the 9000). I checked on amazon, and it had lasted 3 1/2 years albeit with a lot of use. I think my player just wore out, and they are no longer manufactured to last. I replaced it with a similar model.