[EMAIL PROTECTED] writes: your AC3 no longer has the test point that mine did (if your had it at all). Hi Ron, The only test point indicated was on the high voltage output on my AC3, with nil to lift. After you install the board kit you will have three test points for HI, Lo, and Bias. But all are unloaded. The original spec for Bias on my AC3 schematic (not loaded) was -45 to -65 V. What a range. Typical of this condition a 20% variance is not unusual. Best and 73's Carl Hibbard
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