"Receiver is not receiving a signal or the signal is too weak"
We've been getting that since yesterday afternoon, but not on all channels.
BBC 1, 2 & 3 are OK, but the TV Guide either is slow loading or doesn't load. Other channels don't work at all.
Could this be a sign that either or both tuners are dying, or something else?
Power cycling and re-connecting the signal cables has achieved nothing.
Any ideas? (I'm not a h/w guy!)