When I used to service satellite systems back in the day, a common fault was spiders nests in the feed horn for the LNB, often caused by a missing cover, or even just a tiny crack in the cover.
To be fair I mostly came across such a situation with older systems that used mechanical or magnetic feed systems with separate LNB and feed horn.
It’s would be a rare find on a Sky system with a well sealed universal LNB, but I have known it happen.
If its Spiders nests after you clean it out of the feed horn give it a squirt with SpidEx - keeps spiders away for years. Worked fine on my CCTV
cameras - available from CPC but also other suppliers no doubt. Costs about a tenner.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets