[Ed Locker]

Well, I installed the H-16 and it works pretty well except for a annoying backround hum with the volume pot. at mininum. I've changed the polarity of the hum buck coil, the speaker voice coil and the polarity of the secondary of the output transformer.
I subbed the filters (59,59A and 57). I subbed resistor #58 with a 120 ohm-10 watt and a 22 ohm-5 watt and it still has this annoying backround hum. Tried different 6F6G's and the 5Y4G.
B+ is normal.

I am starting to beat my head against the wall. What in the world am I doing wrong? :

Thanks,
Ed