I have a couple of annoyances with my 33251B -- the screen is rotated slightly from horizontal (others have noted the same issue). I tried to disassemble it and align the screen, but it doesn't seem possible to realign. Second, the fan is always on, and is quite loud -- I'd like to replace it, but I didn't want to disassemble so far -- I might just put an R in series with its power.
When I reassembled it, it powered up with an error message -- turns out the clock got reset -- so I set that again and now no errors occur. However, the screen saver now doesn't kick in -- it is supposed to dim the display after 8 hours of inactivity.
Any ideas on how to fix this ?