Have you scoped the signal path starting at the input of the op-amps?
No. I was thinking if both channels has same condiotn the cause is before that point. Some common power supply so I will try that. All what is best connect for signal out to backplates to see how it looks before being amplified?
Are there test connects for that. Or do I just go off ine imput leg if the op-amp? Looks like pin #3
Last edited: