Signal error

[Jimmy+Harrison]

Help!!!

I get the signal error message on some of my sky channels, which seem to vary day by day.

I can't currently watch sky sports main event or golf hd due to not getting a satellite signal error message yet I could earlier.

I can't watch sky movies premier for the same reason yet can watch sky hits . 
it's hit and miss with most of my channels

[pjhaahl]

@Jimmy+Harrison 

Dish slightly out of alignment?

Dish mounting is a bit loose and its being jogged by gusts of wind?

Some trees or bushes have grown a bit, partially and randomly interfering with dish line of sight?

Cables not 100% secure?

What have you checked so far?