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Mini^3 acting up, need advice.

post #1 of 5
11/12/09 at 1:16am
Thread Starter 
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
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post #2 of 5
11/12/09 at 1:55am
I would say so. Where are you located? I would consider fixing it, and am in the Chicago area.
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post #3 of 5
11/12/09 at 2:52am
Who built it?
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post #4 of 5
11/12/09 at 3:42am
Thread Starter 
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.
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post #5 of 5
11/12/09 at 11:53am
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
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