Thank you for your prompt reply. I am a novice at this connection business.
I am using an HDMI lead. I checked the cable. Seems OK. The Humax seemed stuck on a Channel ITV 3+ 1 even when I switched it off and on again. Samsung TV said still ‘looking for signal’ Remote did not appear to be doing anything even after I changed the batteries.
Got fed up and switched it all off last night. The TV was working fine with my streamer on HDMI2.
Anyway this morning I had another go at it and amazingly the Humax seemed to have freed itself and I could change the channels and it worked with the TV and everything seems back to normal.
Keeping my fingers crossed now.
Val