On my Spy vs Spy BB3, I just started playing it this week after waiting 3 months for parts (after it arrived). I'm not sure if I have a transmissive screen. My game has no overlays over the reels, so it's just clear on that part, but LCD screen (touchscreen) on the rest of the lower screen.
After a few hours on I notices this build up of moisture, which revealed some smudges of ?? as well. Wiping each side of the glass did not help...it's between 2 panes or something.
Anyone seen this before? I wonder if it will burn off with use. ...like it just needs to heat up a few times.