Help Apple TV 4K box not functioning.

I have been using this device without issue for about 6 months and then it suddenly turns itself off while I was using it.

I have been met with the blinking light on the unit and no signal being put out.

I have tried unplugging everything from the device (over night) and I am still met with the blinking light when I re power it.

I have tried holding down menu/play buttons and also menu/home button. Sometimes this will change the speed of the flashing lights. Other times the light goes out completely and will give no response until I’ve removed it’s power supply.

Any additional suggestions would be greatly appreciated.

Thanks :)