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Messages - Just Mike

#1
All looks good, I have the fan operating, front panel LED's are on and front panel ch. switching buttons work. I just ordered the output device. Should be good to go, eh?
#2
Thanks Tony. I got a schematic and the first thing I did was pull and test the output transistors. One of the PNPs is shorted. I soldered the rest back in. Can I now test for voltages with no speaker plugged in? There are no blown fuses.


#3
When I power it up I just get a hum thru a speaker. I've built and repaired countless tube amps, but I'm going to need some guidance with this one. Where do I start troubleshooting this? I assume the power rails and output devices are the first place?