Alrighty folks I've almost finished - The chassis is all wired up. I powered it on for the first time this evening and found a the B voltage to be up at 500V - not too worrying since its completely unloaded (no valves in the amp yet).
Then not long ago I plugged the speaker in and thought i'd see if everything else is OK. As soon as I turned it on I hear a hum through the speaker (every single pot was turned to zero) and a pop or two (the pops werent loud).
Obviously this is a very VERY broad problem to ask questions about.. but I have 1 lead: When I installed the output transformer the secondary polarity seems reversed to that of the original fender schematic, so I installed the secondary in "reverse" i.e. green & black wires swapped - what I assume is correct to fender schematic.
Anyways, looking at the Weber 6A20 schematic which is more or less a DR, I saw a note "If loud oscillation occurs reverse brown and blue wires" - these wires are the primary winding of the output transformer. So what I'm wondering is could it be that I have actually installed the secondary backwards?
Has anyone had this problem? I would try it out now for myself, but its after 1AM so probably time for getting sleep as opposed to playing around with 500 Volts...
