In response to what's wrong with it... well...
My father "had a quick look", and something fell out
. From the schematic on radiomuseum.org - looks like metal clip 78 or 99. Possibly related is the haphazard behaviour of the start/stop buttons too. And the up/down lever doesn't work - but that looks like the easiest to sort.
The motor was stuck, but I've persuaded it to turn smoothly now...
To be honest, that schematic scares the living daylights out of me. I've never tackled anything this mechanical before
Anyone got any advice for someone tackling one of these for the first time - apart from being very methodical?
Dismantle the lot, labelling everything + taking photos as I go?
Would I have to identify all the problems from underneath
?!?!?
I'd love to have a go, but can see it ending in a big mess of random bits :-(