I am having problems with 77 too in Cincinnati area. The check LNB details says:
You are currently experiencing signal loss on tuner 1:
Between 5:08 am 1/30 and 12:31 pm 1/30 you had 7 signal losses.
Between 11:08 pm 1/29 and 5:08 am 1/30 you had 59 signal losses.
Between 5:08 pm 1/29 and 11:08...