If you are seeing a message of “no satellite signal” firstly check that the connections from the Sky dish going into the back of your Sky Q box are still finger tight. Otherwise it’s almost certainly a dish alignment issue so check the troubleshooting in this link https://www.sky.com/help/articles/sky-tv-no-satellite-signal-sky-q It may then give you the opportunity to arrange an engineer to check the alignment of your dish. If it doesn’t you’ll need to contact Sky to book an engineer appointment.
If you are connected to a communal dish you need to liaise directly with your building management company / landlord who will have their approved engineers to contact.
No, it won't necessarily affect all channels. A misalignment is not necessarily something that will be visible to the naked eye and could only affect one or two channels.
▪️I AM NOT A SKY EMPLOYEE (undercover or otherwise)▪️ NOTE: I only provide help on the forum boards and NOT via Direct Messaging ▫️ Sky customer since 2001 with: Sky Q | Sky Superfast Broadband | Sky Talk | Sky Mobile
