I just got a raspberry Pi 4 Media centre kit, and have plugged it in to an AV reciever, then into a TV.
Every five seconds or so, the display goes black, or blue.
I have tried restarting many times, and have plugged/unplugged the device in to make sure it is seated correctly. I have also gone to the display config and tried several options on there.
The result is always the same.
Can someone please help me?