tv guide doesn't work

[Holymann]

Hello

I have a problem. 
I have a Sky receiver R024.092.11.00P not connected to the internet. 
My EPG only works for 1 day. 
It used to last for 14 days. Do any of you have the same problem? 
LG Holymann

[Mark39]

That's most likely because your Sky box is only receiving a signal on one of the dish cables. Check by going to Services > Settings  > Signal. The white part of all four bars should be at least half way across.