“I HAVE THE RF-G1185 SWITCH BOX. I HAVE MY SAMSUNG 4K TV, ROKU, AND SAMSUNG BLU-RAY CONNECTED. IT WORKED FINE. BUT NOW IT WILL NOT SEND SIGNAL TO MY TV. I'VE CHANGED PORTS AND CABLES, STILL NOTHING. I'VE DONE THE "RESETS" SUGGESTED. STILL NOTHING. TIA!”