Jas and Dave,
Thanks for your help ...so far!! I have got the deck going, you were right. The 3 way speed selector was missing. I also had to sort the power supply; it was in a bit of a mess.
Now here is the puzzler: The diagrams for the SP10 Mk II are not the same as the deck I have.
The T/T I have is a SP10 Mk IIP. The board shown is the standard one to use the oscillator, logic and switches within the deck. I have checked the appropriate board number on the schematic diagram and it is different to the board in mine.
There is no oscillator etc on the existing board, they are in the PSU. I bet the chances of getting the right board for this deck are about nil.
I stand corrected but I am thinking the domestic PSU just powers the deck with 140v, 32.5v and 5v.
If this is the case I'm probably stuck with a very cumbersome variety of separate boxes everywhere!
Any suggestions, ideas, mockery welcome