No signal

[Darre]

Some of my channels is not working, giving a message saying no satalite signal

[Daniel0210]

@Darre 
”No signal” as per your thread title tends to be a message from your TV. A “no satellite signal” message relates to your Sky box. Take a look at the troubleshooting on the appropriate section of this link.
https://www.sky.com/help/articles/sky-tv-no-satellite-signal
You may then need to contact Sky and arrange for an engineer to check the alignment of your dish. Be aware that if you’re on a communal dish system you’ll have to contact your landlord or building management company rather than Sky.