I have figured out that the bulbs are soldered, and more importantly
the bulb for the LCD panel is soldered within the plastic housing for
the the display (which is again soldered about 15-20 times to the back
board). Looks like I just need to find a complete LCD module, which
does, however, conveniently plug into the rest of the headset unit...

Any ideas on where to pick one up used?

Thanks again.

-Craig