First my Hopper, Access Point box and 3 Joeys are 20 years old. I regularly get Error code 015a, signal loss on the TVs hooked up to joeys. It is hit and miss which ones get it. In the morning I may get two joeys to work. They sometimes work when I reset system and/or joey. The main receiver works 90% of the time w/o being reset. These probs are regardless of weather. cables are new and antennae position not changed. Any ideas?