On Dec 12, 1:01*pm, "William R. Walsh" wrote:

The connections look pretty shifty to me. They are simply wires
wrapped around the leads coming out of each tube and covered in a
rubber boot. I'd have really expected something better. The wires
coming from the power supply look OK, while the ones coming from the
tube are black in color. I'm having a hard time deciding if they were
made that way, or if they have somehow oxidized.

Probably a common connection method - it is only 30mA. Black sounds
odd - you could try scraping. Leads from the tube may be pretty
fragile. You could run it without the insulator boot and look for
arcing.

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