Memetic
Many thanks for that. There is nothing identifiable on the transformer or the complete stacked deck. It may be possible to get some board details but first I'd have to figure out how to dismantle the beast - hey ho, such is life.
fob - the cheque's in the post

. I hear what you're saying, but because the transformer isn't working and there's no I.P./O.P. plate, I don't know what voltages would be required. (I'm assuming that one will be 12v but that could be entirely wrong.) The only answer that has formed so far is to strip the thing completely and unwind the primary, counting the turns and then do a rewind or get someone else to do it!! (I've isolated the problem to a break in the primary)
Could be an interesting winter!