We had the same problem in our 2008 PC (2551s). Same year as yours, so possibly the same model camera.
In early April, I contacted Zone Defense about fixing this; I was hoping to obtain some kind of gasket kit. Unfortunately, such was not available. Woody Vosler, the Engineer at Zone Defense, promptly replied, first to inform me that no gasket was used in that model year, but that I could use a silicone sealant to re-seal; also he would provide additional repair instructions if I wanted, which I did.
I'll include those instructions in this reply in case anyone else is interested, but first, in the interests of full disclosure, I'll confess I wound up buying a new camera from PC-USA thru Carol.
Here are the instructions (emphasis mine):
"Over the years we have changed the way we sealed the cameras, therefore I will explain the most difficult and the easier will be no problem.
Remove the 4 screws from the rear of the camera.
Place the nut on the rear of the camera (compression fitting) in a vice without damaging the cable.
Pry on the boss at the bottom of the camera (1/4" threaded hole) using the vise as leverage.
The housing of the camera will release from the back plate. The back plate will have the electronics and cable, the housing will be empty.
Check to see if the glass is screwed in place and remove and clean if possible. If the glass is siliconed in place, do not try to remove it.
Once the camera is opened, let it sit inside the house over night if possible to completely dry out.
Clean the sealer from the mating surfaces and reseal tightening the screws evenly so the back plate fits into the recess of the housing.
The best sealer is Permatex Right Stuff (very expensive and large container for this job). We have used Permatex RTV silicone sealer with no problems and it is much easier to remove if you need to open the camera again."Which is why I went with the new unit. Easy change-out. I did use extra silicone sealer at the opening in the coach, even with a new gasket. And I had to "convince" the camera cord to go where I wanted (taped it in place for a couple of days).
I still have the old camera somewhere in storage. Someday I may attempt the above repair.
Hope this was useful.
GeorgeB
