Originally posted by Sluggo RML, it doesn't seem to respond to light or electricity at all. Or to the battery-test button, which is supposed to always swing the needle down.
But ... thinking about that "gentle persuasion" comment, I just gave the camera more of a shake, and now the meter will float in any arbitrary position. Shake it again, it changes to another reading.
So yeah, it looks like a mechanical problem after all. :-/
Edit: or maybe it's both, now ... hrmmmmm.
Hey, that could be good news and bad news. If you're already in there, both seat the needle on whatever drives it, and be sure it encounters no resistance. (check how it's seated, first, before trying to bend. It may have been bent by the original fault in the first place, or possibly not. I'd offer to try it if my fingers were quite what they once were (And I still had good tools) Bad news is, you might have a dead meter cell.
Or the needle may have just come off its mounting and you just took it unstuck. This is usually delicate, but not complicated to fix, if so. You're safest with Eric on this, though, and I'd suggest that unless you have very fine manual dexterity, it's not worth bending the part to find out. No shame, there. If you do try it, place some card or paper of the right depth underneath where the needle travels. (err on the side of too thin) As I said, I've only worked on analagous Canons, and this would really mean you want some fine control of what you're doing. (I'm not sure I recall, but it'd just be like a teeny (and thin) version of a cheap kitchen clock's hand on a square post. To re-seat it takes just having a touch.
If you bend it out of shape, you're looking for a parts camera, so, bear it in mind. If the needle's off its seat, you don't know much about what what it attaches to does, so tread carefully, and don't be ashamed to send it to Eric. He has the skills and the bench.