I've mentioned problems with the TV wall aerial sockets, replaced both of mine which cured picture break up by have also recently had problems with the cheap aerial leads that are used between the TV and the socket. They cause signal attenuation quite quickly , replaced them from one of the Chinese shops only a few moths ago and they became faulty, replacing them again has restored a good signal but I suspect it won't be for long, cut an old lead open and the cable is rubbish, going to make some new leads up at home and bring them out.