I was wondering if anyone has experienced this before / has ideas on possible solutions? The camera in question is a Minolta Maxxum 9 (known as the a9 or Dynax 9 in some regions). Im trying to determine why the viewfinder has the dots on it now after a backcountry trip I took — my only theory is the rapid humidity changes that happened due to some extreme weather we were having introduced moisture inside the viewfinder's screen apparatus (not the mirror mechanism / lens)

Any thoughts? The camera otherwise operates fine but I'm leaving it alone for now in case it is moisture/humidity related.

Edit: I'm not sure the type of screen it is, I'd imagine it's a multi segment LED display with a green backlight (similar to a casio digital watch for example). Feel free to correct me if im wrong.