Box did freeze beforehand, but has happened every now and then for years. Did the usual unplug but nothing...
The dish only needs to move a few millimetres to completely loose signal. It's also possible your box is on its way out. What model box do you have, as some are known to have power supply problems which give them such problems over time.
If possible, borrow someone elses Sky box and try it out on your TV and dish connection. If it works, you need a new Sky box, if it doesn't work, then clearly something is wrong with the dish, LNB or cabling.
Comments
Damaged box / damaged cable / misaligned dish if its been windy are quite likely. Have you restarted the box from cold (unplug it, basically)?
Box did freeze beforehand, but has happened every now and then for years. Did the usual unplug but nothing...
Great that's all I need...extra cost!
Or Sky+ boxes from about £40