Hi Daz,
Thanks muchly for that.
Workshop now near freezing, and every time I touch old plastic, it breaks off - So after breaking one trying to release it, thought to seek advice.
Would use a heater but tend then to relax with Radio 4 and the odd (decent) MP4 video.
Cold tends to concentrate the mind on survival essentials.
Thanks again Daz - Not caught yer panel list yet - Chris.
Later - Main/T-con fitted - set now OK,
So 'Set with S/by supply OK', but 'no go' problem sorted, well, for some if not all - Thanks Folks.