If you have an indoor antenna and your TV is acting up, try moving it a few inches from the entertainment center and see if it reduces interference - experts also recommend moving it as close as possible to the outdoors to get a better signal.
We had a store that we knew and worked with a few times over many years install a sound system into our newly renovated family room. It all worked and then we changed providers of internet and tv programming...
Bill made suggestions and recommendations, did the wiring and all installation and provided ongoing follow-up support and service until I was totally familiar with my system. Would highly recommend him to anyone looking for a high quality AV system.