[Shike]

Well, here's the situation.

One morning I got up and tried listening to music through my Mini^3. Unfortunately I was greeted with plenty of distortion.

I finally decided to run a quick test on it. The first one I ran was a DC offset check following the procedure from AMB Labs.

Measuring from IG I got:

OG: 3.3V
OL: 2.0mV
OR: 1.0mV

Yes, OG is 3.3 volts, not millivolts. Should I take this as the ground opamp has gone bad, and if so is there anyone I can hire to fix it?

Thanks for your time

 

[Pars]

I would say so. Where are you located? I would consider fixing it, and am in the Chicago area.

 

[MisterX]

Who built it?

 

[Shike]

Stephen at Rockhopper.

I sent him an email a while back but I haven't heard back from him. It was out of warranty since I bought it used anyway, and since he's slowed down production I imagine he's only working on amps on occasion now.

@ Pars

Sent you a PM with my details if you think you're up to it.

 

[Pars]

PM'd back. It appears Mouser is out of OPA690s until December. I can do it, but if you want to help him Marshall, feel free. You might even have some OPAs laying around