A short while back I posted my findings on an SX-140 resurrection.
You should be able to find it by searching here. Silver mica disease
is all too prevalent nowadays so if thats not an issue for you then
the rest is pretty reliable.
As for the meter...I really haven't paid much attention to it because
its such a cheap bouncy thing but it does seem to read about what I
would expect.

Bill W X 4 A