Originally Posted by Andrue:
“That's a bit of a failing then. I only use my Hummy as a backup for my Sky+ so the situation doesn't arise but I'd have hoped that the Hummy just displays a prompt like the Sky+ does and if the user doesn't respond the recording takes priority.”
I think you misunderstand the problem. The issue is (likely) that the OP is receiving channels from two transmitters (i.e. different frequencies from different transmitters) and hence this can cause problems like this (as the data received from the 'foreign' CH5 transmitter is of no use to the channels from the native/home transmitter).
You are likely thinking of the case whereby a tuner is required for recording elsewhere (different MUX) and hence is not available for normal viewing (in Sky's case it sounds like it prompts for action, on the Humax it switches to recording and your screen goes blank).
If the OP let's us know their postcode we can find out which transmitter, and hence which frequencies their channels should be coming from.
Mathew