Thanks, I'll disinfect for a couple of days and then disassemble.

The unit is in an apartment building, on one of the top floors, with a net
on the balcony to prevent birds from getting near. Inaccessible to frogs
and other small animals, so I doubt it's that. Highly likely some kind of
fungi though.

I used to have a 25-year old unit that was built like a tank. Needed two
men to haul it anywhere, and a solid support on the balcony to prevent
damage to the window frame. It was easy to disassemble and clean though.
Obvious where everything went, and the mechanical rotary switch was easy to
hack (to make a temperature controller for). All the newer stuff seems to
be sealed up tighter and much harder to hack.

On Fri, Apr 11, 2014 at 8:34 AM, Dwayne Reid <dwayner@planet.eon.net> wrote=
:

> My limited experience with this is that you have mold growth or a
> dead critter within the unit.  The only sure cure is to open the unit up.
>
> You mention that this is a newer unit and that it might be hard to
> open.  I find the opposite - the newer units seem to be easier to
> open up than some of the older units that I've worked on.  You just
> have to look harder for the release points on the covers.
>
> Google may help if you pound in the manufacturer's name along with
> keywords such as "take apart" or "clean" or "disassemble".
>
--=20
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