Well, first off, many thanks to those of you who have helped me thus far in my amp build. Much appreciated. This is my very first build and I had (and STILL have) a lot of learning to do.
Now, to the point: I FINALLY finished the build today (yay!), and turned it on (didn't explode...), measured some voltages (didn't die), installed the tubes (none melted...), plugged in a guitar AND
bzzzzzzzzzzzzzzzzzzzzz
That's about it. I re-checked the obvious stuff, and nothing was odd except I had the common and the hot wires connected to the wrong prongs of the IEC socket. I corrected that, and kept checking, but nothing seemed odd or obvious. It seems to be an unchanging hum (much like a mismatched pair of power tubes or a 60hz hum, or some kind of "motorboat" sound) that neither increases or decreases in volume. It isn't very loud.... Turning the volume and/or eq knobs produced no noticeable change. Plugging in a guitar changed nothing. The tubes all lit up, and the voltages seem to be pretty close to where I'd expect them to be.
The amp is a two channel creation with CH. 1 being a EF86 AC30/4/AC15ish circuit, and channel two is a full eq AC30/Top Hat/Matchless-ish thing using 12AX7s. Four EL84s for power, and one 5AR4. All tubes are new and/or known to be good. Trannies are Mercury Magnetics Woden clones and a Mercury Magnetics choke.
So, where should I start looking? I can post pics of the schematic too, if that would help.
MANY THANKS!
It's almost alive....!
