Devialet Premier D - Red colour Display before it distorts and no sound right after

Just bought a demo unit from a retailer, as soon as I turn the volume up, very minimal at -35 and it starts to distort and display turns red and the front of the unit has a red blink light (below the power button) and no sound right after....
Latest software in, all digital inputs and straight line in have similar results.

Contacting Devialet and retailer for assistance

Any similar experience anyone?