Okay. My unit powers up, but will not pass audio, regardless of whether the eq is in or out. So likely there is a short somewhere maybe? I'm regretting not buying pre-made op-amps, so I could rule those out. Is it too late to do so once a kit has been purchased?
My pre-flight measurements all exceed the measurements that they should exceed. Some of them appear to substantially exceed them. I'd be happy to provide pictures, voltage measurements or anything else that could be useful. I have an unbalanced audio probe that I've used for de-bugging guitar pedals.
This was my third 500 series project, the other two fired right up--so I guess as a relative newb I was due for a trouble shooting adventure.
If anyone has any advice on where to start or what to check, I would genuinely appreciate it.
All the best,
James