Sounds like TCI problems. Have you done the Bake&Dry? Requires removing TCI opening up and baking in oven. Scared yet??
Bake at 100 f for about a hr I think is what most say. I did this with hair dryer but baking is probally better. Someone will jump in and tell you how to bake,look for bad things inside there and sealing it back up. We may have a thread for that its been a whike since I was in there. If you get it out most don't put it back where it is but on top of air box. Stays drier and easy access.