My two year old Integra DTR 7.1 has developed a problem. Seem's that the remote sensor in the receiver has stopped receiving. I've changed the batteries in both the units remote, and the universal remote that I use for my system. The problem is there with either remote, which leads me to believe it's the receiver and not the remote. Has anyone ever had this type of problem with any brand? Have you had to have warranty service from Integra? Thank heaven for 3 year warranties.