Also having this same problem for about a month now -- going from source into amp and out to TV gives me "No Signal" message on both the TV and amp, and then it finally shows up after maybe 5 minutes or so, give or take. Going from HDMI source straight into TV works just perfectly though. I Tried all 4 HDMI ports, as well as TV, swapped out different cables on both ends, and tried all the Upconversion settings (it usually is disabled), but same "No Signal" message. Not sure what's going on, any thoughts?
40" LNA550 Samsung