[Nathan Slingerland]

The Hammond 155C choke arrived much quicker than expected. I ordered from Arrow Electronics - which has 1-day shipping on everything! I expect it's a promotion and won't be that way forever, but it sure was convenient.

Audio Choke

The new choke was almost exactly the same height as the old one was wide. I derusted and repainted the shell after I realized I could reuse it. I removed the outer mounting bracket, rotated it 90 degrees, and it fit perfectly inside the old transformer case.

[Image: https://farm2.staticflickr.com/1854/4285...23d6_z.jpg]

[Image: https://farm2.staticflickr.com/1923/4393...5b66_z.jpg]

[Image: https://farm2.staticflickr.com/1957/4393...6fb7_z.jpg]

Main Chassis Derust

The other thing I've been doing with the 37-690X is removing the rust on the main chassis. Like the power/amp chassis, this one took several days of applying Evaporust Gel for a few hours - and resorting to naval jelly on the really stubborn spots. Finally I sealed it with Boeshield (that's why the chassis looks a bit wet in the 'after' pic below).

Before:
[Image: https://farm2.staticflickr.com/1875/4463...73de_c.jpg]

After:
(I forgot to take one before replacing the tubes)
[Image: https://farm2.staticflickr.com/1975/4487...296d_c.jpg]