I found this nice late '70s Akai tape deck in the e waste while looking for stuff for Disassembly Academy and it was too nice to trash without trying to fix it first. It looks like I revived it!

It looks like these were made from 1977-1978 and retailed for $200, the equivalent of $1,000 today

Well, it's not totally fixed. The auto-stop feature sometimes triggers randomly even when the tape hasn't reached its end. I'll have to see if I can figure out why
This mechanism is responsible for the auto-stop function. I don't really understand how it works, but I think the belt that runs across the top of the detection wheel is a little on the loose side, which may be what's causing this
This diagram would actually make a kind of cool tattoo

@MLE_online
It would certainly be niche

Where & how do you find the diagram for a 1977 tape deck?

@billheywood you just the name + the model + service manual and hope there's a website that has it
@MLE_online
It always amazes me what people have thought to digitise and keep online