Hi, it could well be a handshake issue between the console and the amp, did you try resetting your amp to its factory settings at all to try and get the handshake working again.
Put the receiver in standby
On the receiver, hold down the standby button for 5 seconds.
After “Clear All” appears on the display, “Press ENT” appears.
After “CLEARING” appears on the display for a while, “CLEARED” appears.
Unit is now reset
If that doesn't do anything for you then you could try resetting the display settings on your console.
Power the console on with the guide button on a controller, as the console boots up press and hold Y and the right trigger until the console reboots.