Sky boxes are twitchy at best!
And here in Spain even more so.
Some boxes operate better than others when it comes to signal reception.
Once you have reconnected the power at the mains, try leaving it for 5 mins or so in standby mode, then switch it on with the Sky remote.
Also, if you use a card in the box, take it out before you leave, then after you have reconnected the power at the mains, re-insert the card and then leave it for 5 mins before switching on with the Sky remote.
In the UK, Sky always recommend that you leave your box in standby mode so they can automatically update the software for you.
So if your box is left off for long periods of time, then it may need a software update, but try the above first.
This message was last edited by TechNoApe on 26/01/2011.