As usual, Jule came through.
Don't know why I had no output, but Jule talked me through checking the fuse and tightening power cord receptacle. I jiggled the bulb assembly for the front light. And now everything works as beautifully as before.
Weird, but given how handy I am NOT typically, I'm going to count that as fixing it!

I should also mention that had my masterful technical skills not proven capable (an outcome I was sure to be far more likely), Jule had already offered to look it over for me at no charge. That's what I call service!!
Anyway, back to making music!