road side Sylvania Hybrid set

[Eric H]

Disconnect the wire from the Flyback to the input of the Tripler and see if you can draw a healthy blue arc from the Flyback to the tip of an ungrounded screwdriver (one with a good, insulated plastic handle) You should have (guessing) 5-8kv of AC at that point.

If you get a decent sized arc at the flyback but very little at the 2nd anode then my guess would be a bad Tripler.