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Old 05-20-2010, 09:12 PM
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Adam Adam is offline
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Join Date: Oct 2005
Location: Phoenix, AZ
Posts: 2,344
I have it working again I circled the wrong resistor above, it was R325 that was heating up. I checked and found that 24v source was only at around 1v. That zener diode was shorted, I replaced it, and the new one shorted too. But then I got another zener, and changed that regulator transistor, it's working now.

Now the power tuning is only going down, it seems to get stuck when it tries to go up, it sounds liken a mechanical problem to me. And the convergence could use a little touching up. Otherwise everything seems ok now.
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