David,
Hmm, Inshallah, methinks.
I have continued to trawl around and the net is empty, I did find a reference to a manual that had been on sale in the states for the TK-250 and it seems to be the one I have downloaded, only my download is minus the circuit diagram and layout pages shown in the example pics of the one for sale. Although the internal layout of the TK-250 and TK-359 are slightly different I have discovered over the weekend. So there is probably a specific TK-359 one anyway.
The irony is some time ago when I read, out of then pure interest, about setting the VCO on these, I am sure it was a post by someone from this forum, posting elsewhere, but I just cannot remember now.
As you say it is probably time to place it back in the pile file and see what else I can find to play with. There are plenty of options of other radios to wreck!
I agree with sheep and survival instincts, I keep my traction engine on a sheep / cattle farm. Some years ago I had sheep run down a field en masse, struggle through a fence then stand on the railway track in front of me, not the best of moves.
Take care and thanks.
Ian (G8KSZ)