There is an "O" ring seal on the radio where the "window" is mounted to the feedhorn ... that can fail. Then we have to "window" itself that develop a crack. Either one of those would show a moisture cloud behind that window. Then we have all the exterior connectors.. Each of those should have had a dab of dielectric grease placed into the connector before it is screwed on.This prevents moisture from either penetrating the connector or moisture condensing within the connector if temp and humidity conditions are just right. This will cause a momentary short between the center conductor and the ground braid. All of the greased connectors then need to have a waterproof boot applied.
Thanks. Gwalk...I don't remember seeing a waterproof boot....will check again in the morning. Charles....I sure will look at the window again tomorrow. Either way I think Liz was correct with report of water leakage....the whole thing has been drowned with rain. Right now it seems to be working ok....but the rain has stopped. In any case...should be okay when the service tech gets here Friday.
Well the service tech was here this morning right on time. He checked everything. Checked and applied the dielectric grease then taped all connections. He also replaced the horn as it looked a little funky. He said most likely water had gotten into one of the connections. He also checked our cable into house and said it was okay. System is back up and running great so far. Signal is better than it has been for the last few months. I love my service technician. He really seems to know his job and does it well. I would mention his name but not sure I should. Thanks again Liz for your speedy help with this situation.