HDR 1100S repeatedly losing video output


Whilst watching live TV, my Humax screen went black and TV displayed no input. I'm using HDMI. The STB display still showed it as being on BBC One. I pressed channel up and the display showed it change to BBC Two. I pressed standby, turned back on and still a black screen. I turned off again but waited 20 odd seconds until I hear the click that means it's properly powered down.

Turned on and I have a display. Booted up and after about 10 seconds lost display again. This time I put into standby and unplugged the box. Left for a minute, powered on and I had about 5 minutes of live TV before no display again. Just rebooted and changed display output from 1080p to 1080i and will see what happens. I've changed hdmi cable put the problem still persists.

I haven't checked scart output as I don't have a cable to hand.