Here is a link to a PDF describing the repair of the Olympus 20W lamp house in the Olympus BH-2 (BHT/BHTU) stands. I hope somebody finds this helpful.
Edit 4/14/2019: Replaced outdated link with a link to the master index, which always contains the most recent versions:
https://drive.google.com/open?id=0B7ckZ ... nFYVDJSRW8
Carl
Repairing the Olympus BH-2 20W lamp house.
Repairing the Olympus BH-2 20W lamp house.
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---