Are you sure the problem is condensation...or just a LED that's difficult to read?
My AQ was received 12/23/2010. I could barely read the numbers and after my first smoke, the digits were only partially visible. Turns out to be a faulty board. Stuart said they've had to replace a number of these AQ boards, and have contacted their supplier to resolve the problem.
Long story short, an email to Customer Service (Tony) resulted in a new board being shipped out to me the next day. Since swapping out boards, I have no problem.