I have a Yamaha RX-V371 AV Receiver which sits between a media centre, cable TV box and a samsung tv. Everything connect via HDMI, ie. Media Centre --> AV Receiver --> TV and the same for the cable tv box. Of late I have found that when switching the AV Receiver from 1 HDMI input to the other that the audit and video signal comes on and off intermittently. I get flashes of sound/video. It will attempt 4-5 times before it finishes with a blank screen (I.e. no audio or video) As I switch backwards and forwards between the two HDMI inputs the flashes of audio and video on each HDMI input get longer and longer until finally I have a consistent signal for audio and video and it will be fine until I want to switch to another input - which send me backs to the beginning with the intermittent signal. the problem is getting progressively worse. When it first started happening it might take 3-4 minutes to get a solid signal - now its a 20 minute effort. Its so bad now that I have removed the AV receiver from the middle and now only have Media Centre --> TV and there is no signal issue (but have lost all 5.1 surround sound). Any idea where the problem is and whether or not its repairable?