I have recently received an HR21-200 to replace an HR21-100. The HR21-200 is doing something the 100 did not do. When I change the channel or stop a recording, the TV it's connected to shows "no signal" for approximately 5 to 10 seconds. I guess the 200 stops sending out a signal when it is switching from one function to another. I am using the HDMI port to the TV. Is this normal or should I be concerned that there is a problem. The HR21-200 is a remanufactured unit.