your box is full half the time, so, i'm gonna post this here :P
https://i.imgur.com/3evkiXO.jpg
this is the sad SAD state that my late Dad's UHER R2R deck is in, just took the top off.
he was an engineer, but NOT very good with electronics, and got it in his head to re-wire it at one point, and it really never worked right, since, well, it was given to him NOT really working right in the first place.
he made it worse.
I will NEVER understand why he used simple twisted pair wire for the play heads and shielded for the record, that makes NO sense at all.
I do not know it will EVER work right again it does pay, poorly
recording may be hopeless.
I just cant get parts,