Thanks Guy, I’ll give that a try with the phone camera.
Though I’m a bit skeptical it’s a sticky button issue, because I can press GO + MENU together (to check the SW/firmware version) and that combo works fine, then LIST scrolls through the info as expected. If MENU itself were physically sticking, I’d expect that combo to misbehave too.
But I’ll test it anyway and report back what I see through the camera.