We had purchased a new TV and set that up with our Humax HDR2000t, which was working fine with some loss of quality in HD channels in bad weather, but nothing serious. We noticed that HD channels were more off than on, so did an automatic retune with the result that all HD channels disappeared. I have been looking through this forum and others for an answer and have tried several suggestions, with no success. The TV has good reception of the channels and on inspection is receiving the HD channels on the expected ‘channel 47’ from the Sudbury transmitter. The Humax, however, is not showing 47 as an option at all. On a manual search 47, is 0% in quality and strength. We have completed a software update, emptied the channels with a retune with the aerial out, and stopped short of a factory reset. Help! In the simplest possible terms, please