My ribbon cable connecting the top-deck to the mainboard is busted (See cracks in the copper connection pads):
(sorry for potato quality: did my best)
Cautionary tale
I thought I was being careful, but evidently not. treat the ribbon cable at the top-deck side particularly delicately
“Anyone have a spare”
I imagine this is the sort of thing someone might have a spare or two lying around. If you have a working ribbon cable collecting dust on a shelf somewhere, I would gladly take it off your hands.
I asked a moderator, and they said it was okay to make this post, as well to offer to pay for shipping.