It is now the start of 2022, and I noticed that Channel 4 HD is fine on 126, but there was nothing on 104, their old SD channel. Assuming they had stopped transmitting on 104, I tried to rescan to see if anything else was on 104.
Now the box would not receive any signals. I tried an old Technosat receiver and that worked fairly well so the fault must be with the Humax.
Some people on another forum had the same trouble, and cured it by unplugging the HDD, after which channels could be received normally, even after the HDD was reconnected. This did nothing for me, even after resetting the box. Is there anything else I could try - maybe a secret servicing mode? I am using the custom firmware and the recording unscrambling hack.
I have just rebooted and it said there no channels - click to search. Now it says "Verifying your postcode..." for ever, even though the strength shows 85% and Quality 100%. I can't even see its web interface on my PC via the cable.