GEC Z9533 control gear.

The only lantern out of the 3 removed examples to retain its original gear. Over time these elderly ballasts lose their ability to strike SOX lamps, with other more prone problems being that they like to randomly short to earth or just burn out. Seeing that the only other original ballast was disconnected entirely, and the other lantern had a set of thorn gear lashed in, i was dubious about putting power to this one. Thankfully after much testing, the ballast seemed fine, so power was applied, immediately revealing the aforementioned striking issues. It works fine, with the usual expected buzzing.