[Hammarlund] Weird problem with my HQ-129-X.

[Ken Hickman]

Hi Fellows,

I am working over a 129-X I got thru Ebay. The previous owner had made many
changes in the circuits.
While going thru stage-by-stage to restore to original schematic, I had a
fire occur in the filament wire
that runs from the ungrounded side of the filament transformer. A single
wire running from the filament
tie-point to the 6V6 burned up turning cherry red and emitting copious
quanties of smoke. The 6V6
tests fine. The only thing I have been able to come up with is that the wire
shorted to the chassis.
The socket shows no leakage to chassis. First time I have had this kind of
thing happen!
Anyone have anything similar happen? Comments?
Take care,

Ken   N5CM