Yikes. You should always use distilled water in an ultrasonic humidifier. Otherwise you're breathing all that cr@p. Or use an old-fashioned thermal humidifier.UPDATE: I put 3 Silica Gel packets on my LCD panel over the spots and sealed it with painters tape and clear plastic wrap for 4 days. No change in appearance. It seems that it is not condensation but a leftover residue from the "hard Arizona water" that I was using in my humidifier. So I think short of disassembling the AxeFx I am stuck with the issue