I have a digital aerial, amplifier and splitter feeding four tv sockets. I use two. In one room I have a PVR9200 and in 2nd room I have a Fox T2 set top box. All was working fine until a couple of days ago. The Fox T2 is ok on most channels but on Sky News, 82, it shows no signal. The signal strength is about 80% but quality is 0%. The PVR9200 is still fine, receiving all channels including Sky News. So two tvs - same aerial but one shows Sky News one doesn't. Surely it can't be an aerial problem? Any advice would be much appreciated.