It’s my fault, I fiddled.
Radio was working fine, then I attempted to DIY a remote head cable as they can’t be purchased any more.
I left it for a couple of days, trying it again each morning, in the eternal hope that by some magic or via electrical fairy helpers, it would spontaneously start working again. I kept telling myself things like “Perhaps the capacitors need a little more time to fully drain. Yes. that’s why it hasn’t started working again.” For a hyper logical person like I am, it’s amazing the flights of fantasy we can summon in times of need. I even offered a little prayer, while all the time knowing that in the grand scheme of things, there were more worthwhile causes to which God’s attention could be better addressed.