Astronomy Common Knowledge Quiz.......
Quizzes & Puzzles0 min ago
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For more on marking an answer as the "Best Answer", please visit our FAQ.Sky use a few different satellites at almost the same position in space (relative to the earth, anyway).
Different channels come from different satellites, and if your dish is slightly out of alignment, you will be OK for some channels (satellites) and not for others. A realignment may help.
Try some local dealers rather than sky themselves, should be cheaper and could well use the same engineers anyway.
this is most probably caused by dish misalignment , but could be damp or water in the LNB or a problem on the cabling.
Doubtful this is something you could solve yourself, you'd need a field strenght meter at least. The job's esp�cially best avoided if heights are involved, get a tech to take a look.