stickjam
Well-known member
With no signal going in, upon warming up a couple minutes after power on, this amplifier starts outputting a low level hum at exactly 240 hertz.
60Hz or 120Hz would make sense, but any theories what could cause this at 4x AC line freq?
http://www.theatreorgans.com/hammond/faq/a-100/schem3.jpg
Thanks
-Bob
60Hz or 120Hz would make sense, but any theories what could cause this at 4x AC line freq?
http://www.theatreorgans.com/hammond/faq/a-100/schem3.jpg
Thanks
-Bob