rbailey1010
Active member
I am getting no sound from my RM20 combo. I changed the powertubes and was biasing them when I got this crazy feedback like noise and then it stopped. The voltmeter read 0 and no matter what I did I could not get a reading. I have biased my RM100 head plenty of times and know how to exactly do it via the manual. Do I have a blown fuse? The power tubes light up so I know they are getting power to them.........
