On Mon, 25 Jul 2011 00:47:27 -0300 John Coppens wrote: > I still have the tube - I'll try to do an autopsy tomorrow :) As promised, I cut open the tube and took a couple of pictures: http://jcoppens.com/misc/img/fil1.jpg http://jcoppens.com/misc/img/fil2.jpg As suspected, one filament was completely gone. The mounting posts alone are probably not enough to ignite the gas, even with HF ballasts. John --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .