After reading another thread, I retuned my 9200 manually last night to eliminate the duplicate (800 series) channels. Living in Poole, I suspect the back of my aerial points at Stockland Hill and so not surprisingly the duplicate channels turned out to be SW ones (as opposed to Rowridge channels). However, although the Stockland Hill channels were much lower strength than their Rowridge equivalents (resulting in serious pixilation), they had populated the 1, 2, 3, etc. tuning positions and the Rowridge channels were shown as the 800 series duplicates (could this be because the Stockland Hill channels have lower channel numbers than the Rowridge ones and so are scanned first?).
Anyway, to cut a long story short, I manually retuned the Humax and now have the correct channels in the right places and no 800 channels at all.
Since when, the clock has kept running accurately in stand-by mode…
Is this a coincidence or does it just show that the clock fault is inherently intermittent in nature?