First symptom was Parliament TV turning up on the Choice T channel. Could not tune in Choice TV then Prime TV disappeared.
Finally used Reset and re-tuned. During tuning it listed a number of channels not seen before, but Prime and Prime +2 were on the list. However, once tuning was done Prime was not available; if selecting channels it would go 7, 8, 9, 11, 12. No 10 was available.
Any clues please
After several attempts at re-tuning it has come right. Although it was recognising Prime on the tuning list, it would not display it, weird.