After 25 years I thought I knew everything about DISH. I have three receivers on the 71 and 61.5. So last night I removed a WALLE from my man cave to put in the RV. A while later my wife told me I had caused the BR TV to lose signal. I of course said "that is impossible". Long story short, after an hour of trying to restore the BR service I reinstalled the WALLE in the mancave. Walaa, service restored. I did not install the system a pro did it but by my count there are three cables from the roof to the house. One for each TV. What happened?