This morning I was watching a recording from last night ! About half way through it stopped,the blue screen appeared with the message (No Signal) I shut it down,unplugged it,wated 5 mins plugged it back up.The blue screen came on with (Scanning) for about 5 seconds,then the (No Signal)appeared again.I have never had a problem with this 4 year old unit. I have the lifetime subscription. Any advice ?thanks.