green screen hdmi hdr fox t2

I’ve upgraded my TV to a 4K Samsung QE43Q60R, and after connecting my Fox T2 I get a green screen. I can see the initial Humax boot screen and then a tantalising glimpse of the TV broadcast for a split second, then a green screen. I’ve tried various HDMI cables, and different orders of turning...

I have just bought my second secondhand HDR Fox T2 from ebay, and this one shows a permanent green screen on hdmi. On the hdmi input, when switching on, a hd screen appears for a second or so before going green. The scart connection is fine. My original HDR and the first ebay purchase are...