[Arran]

Speaking of a model 84, I bought a model 84 from a fellow collector, but it wasn't the same 84 that Russ was working on, this was a Canadian model 84 from 1950, looks like a 50-524. Anyhow this guy decided to replace the filter caps in it, with, I guess, whatever he had rolling around in his junk drawer. One cap was mounted under the chassis, where it should be, even though it was a 450 volt cap. The other was an axial cap, another 450 volt unit, mounted to the side of the bracket on the back of the speaker, with a wire twist tied around the body, it was connected electrically to the under side of the chassis with a pair of wires fished through a hole, and the connections at the cap itself were bare. Neither of these electrolytics were new, or if there were they were new old stock, and they didn't even match brand wise. Also for some strange reason, he had replaced a mica cap with a .047 uf, I think it was a 47 mmf on the schematic, it was a coupling cap I think so not as critical, still it was off by a factor of 1000s.
Regards
Arran