Same trouble when I reverse xfmrs, I guess one is bad.
I'm gonna sell the two cold-cathode florescent lamps (thank Eric) and one xfmr, maybe someone needs these, and keep the body to try to build a new head with green and blue LEDs.
I have one question for those who have built LED heads, do you use a red LED instead of the red safety filter ?
With a foot switch it's very useful for dodging and burning