Power light on Apple II

[Kallikak <ken.wessen@gmail.com>]

I have 2 Apple II+ keyboards, but each has an irritating minor fault.
One has a dodgy spacebar because a bit of plastic has broken off that
should hold the metal support in place beneath it, and the power light
doesn't display on the other. I like the feel of the second one much
more than the first, but it's a bit awkward to not have any visible
indication of the machine being switched on.  I know the lamp is ok
because if I put it in the other keyboard it works.

I was interested in advice relating to the difficulties I may
encounter if I completely dismantle the keyboard and try and find the
fault.  I really don't want to mess up an otherwise working keyboard,
and I am quite wary since the first thing I did was to slightly (only
slightly) tighten a couple of screws beneath the area near the power
light position and that stopped about 4 or 5 of the left hand keys
from working at all.  :-(

Ken