JonnyB
Active member
Hi I have finally got my RT2/50 but it has an issue with 50/60 Hz hum. It's nothing to do with cabling as it hums when no input jack is inserted and not mounted in a rack. The weird thing is if I pop a jack plug in the input, the hum goes away! I'm aware that this is making the input open circuit as it is shorted when no jack is inserted. If I short the other end of the jack (or insert it into a low impedance output) the hum comes back. I've checked the heater lines with a scope and everything looks OK.
Just wondered if anyone has any ideas?
Cheers!
Just wondered if anyone has any ideas?
Cheers!