771 error

Recently I started to get drop outs on several HD channels. Local HD is fine as is ESPN and HBO. Here are my readings:

Readings were +/1 2 on both tuners

(101º)

1-8     83 88 85 0 83 96 86 96

9-16   84 89 86 0 86 97 86 97

17-24 83 99 86 0 85 97 88 97

25-32 83 97 84 78 86 97 86 97

(110º)

1-8 NA NA NA NA NA NA NA 0

9-16 NA 0 NA 0 NA NA NA NA

(119º)

17-24 NA NA NA NA NA 54 90 0

25-32 0 53 73 56 0 56 0 59

(99º(s)

1-8 0 0 33 77 0 0 NA NA

9-16 NA NA NA NA NA NA 24 0

17-24 49 54 0 0 77 80 0 0

(99º(c)

1-8 56 61 52 56 54 59 52 55

9-16 55 59 52 56 57 58 NA NA

(103º(s)

1-8 0 0 0 0 0 0 NA NA

9-16 NA NA NA NA NA NA 0 62

17-24 0 72 43 52 42 45 0 0

(103º(ca)

1-8 NA NA NA NA NA NA NA NA

9-16 30 35 29 38 27 33 28 37

17-24 24 31 32 35 24 31 29 33

(103º(cb)

1-8 0 0 0 0 0 0 0 0

9-16 0 0 0 0 0 0 NA NA

17-24 NA NA NA NA NA NA NA NA