make sure the RG6 connectors, if you made them yourself are mot shorted, the previous poster said that the
grounding shield wires will touch the center conductor, and that's what happened to my reciever, it acted just like yours did, just blinked and then shut off. I checked the connector and sure enough, it was shorted. Fixed it and and tried again and presto, it worked fine. Good luck. Let us know if that fiixed it.