HP-41CV: Strange "Power Management"

[Jonas Sandstedt]

And never do what I did - although being an electrical engineer.
I put in four A23 12V cells in a cosmetically excellent 41c I had bought in a bundle of HP calculators.
After trying to revive the calculator without success, I sent it to The Calculator Store, and it ended up that they could keep it for parts. I have written about this before, but it should be repeated since it only takes a couple of moments of “non-thinking” to destroy a fine calculator.
Best regards
Jonas