+1^^ to suggestions by
@Perimeter and
@mat200 .
I can only add this from a copy and paste from a post I made
July 2018:
I think the best we can do to fix an affected camera and mitigate the situation to help prevent (but not guarantee) future moisture intrusion is as follows:
Wait until the ambient relative humidity is at its lowest point. Chose the driest environment you can for this procedure; in other words, the bathroom after someone took a hot, steamy shower or the kitchen after or during the stove has cooked or boiled anything is NOT a good place. This will be the biggest challenge but is likely the best way to not trap moisture-laden air inside the cam when re-assembling. Late afternoon, outdoors, sunny, no rain for 24 hours and out of direct sun may be your best bet.
Open up the cam, noting how it is assembled and what gaskets and sealant rings are in place then dry it out. Soak up excess moisture with lint-free cotton rag, handkerchief, etc. Use a small hair dryer on low to accelerate the drying out of the cam's interior but don't overheat any of the components.
Allow the cam to cool down to room temp.
Replace the bag of desiccant with a new, dry one. If you have no new bags, take the existing one, dry with hair dryer then bury in cup of uncooked, instant rice for several hours to absorb moisture from the bag.
Reassemble the cam (DON'T FORGET THE BAG OF DESICCANT), insuring OEM gaskets and sealant rings are in place. Insure that the pigtail cable entrance is sealed. If any gaskets or sealant rings are missing or damaged or the cable entrance is not sealed, you'll be wasting your time and moisture will be back in sooner than later. You should use clear, outdoor-rated silicone sealant to caulk the mating surfaces before AND after re-assembly, including the pigtail cable entrance. Allow to dry overnight before placing back into service.
