after having worked fine for many years, a week ago I lost all Switched digital video channels on BOTH of my tivos. they could not fix over phone so they sent out a tech. Turns out he was a contractor that had no experience with cable cards or tuning adapters. He checked my signal and said it was fine and left in 10 minutes with problem unresolved. Spectrum then suggested I swap out my cable cards and tuning adapters for new ones. I went to Spectrum office and got two new of each. Problem still not fixed after I installed them and had them pair to the tivos. Sent a better tech yesterday who first fixed a weak signal (completely missed by the first tech) , but still did not get me any switched digital channels even after spending 3 1/2 hours in my house and with numerous phone calls to his superiors, and installing yet another new tuning adapter. The tuning adapters were showing "offline" when being read by the Spectrum tech supervisor. My Spectrum cable box in my bedroom gets all the switched digital channels perfectly. My thoughts are the tuning adapters are fine since there is no way 5 tuning adapters all went bad, and I am having the problem on both of my tivos. All other channels are fine so the cablecards are not the issue. It has to be a back end issue. They said they will call me but I am very discouraged. any Spectrum experts out there?