Reply to "Z4000 erratic amps"

Thanks Stan. There really aren't that many components used only in the current sensing and used in both tracks. There are two quad opamps , U16 and 17 that are only in current sensing and all of the single components seem to be unique to each channel. One or both of those have potential to be bad. Pretty inexpensive part

I haven't yet used my multimeter to measure current output while watching the display. I will try that to see if meter displays a stable value while the transformer is varying.

10/6/198:24 PM

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