The Secret Society of Lathe Trolls

Hi all, I'm having problems with my Recordio model 6B30. The tubes work, the turntable spins, no hum, but no volume. I tried playing a 78, no sound, I plugged the cartridge 2 pin plug into the mic input, I had to turn up the volume full blast and tone control all the way to the left to even get a sm...

Len is my best friend in record cutting... along with Gib Epling... please help Len!!! Len is a very kind man, and he has probably the best record cutting equipment in the world! Help my friend!!!