Lost local SD channels
Hopefully I'm in the right forum.
I just realized this week (I'm in the Bellevue area), that I've lost several of the local SD channels - Komo 4, King 5, Kong 6, KCTS 9, KZJO 10, and KSTW 11. The screen message just show no TV signal detected. Surprisingly, CBS 7 and FOX 13 aren't affected. I can get them in HD however (channels 104, 105, etc).
I have a cable card and Silicondust Prime with Windows Media Center if that makes a difference. Have I missed some Comcast changes or does anyone know what could be causing this? Appreciate your help.