I had my Tivo Bolt for 2 years. Everything was working fine until yesterday night. The SD channels on my lower and upper channels went out (getting channel not available message). The HD counterpart works fine. I have checked cablecard diag menu and it seems the cablecard is paired, but the VCT is 0 and Val is not present. I'm not sure if it's a signal issues, cable card, or the Tivo. I have attached some photos from the diag menu. Has Anyone come across this issues before?