I’m having a technical issue with my Humax 1100S when connected to my Anthem MRX720 AV Amplifier.

The Humax is connected to my Amp via HDMI

The Amp is connected to my TV via HDMI

There are several other inputs connected to my Amp via HDMI

When switching between inputs on the amp, when selecting the Humax box approximately 50% of the time it will get a snow like image on the screen for a brief second, and then the screen will not output a signal. Audio will continue to be outputted. The only way of resolving this is by turning the Humax box on and off again. It appears to be an issue with the HDMI handshake between the Humax box and the amp – can you please advise?

I have tried changing available options on both the Humax and Amp

I have tried changing the input ports boxes are plugged into

I have tried changing the HDMI leads

I have tried changing the Humax output from 1080p to 1080i