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LA502 Optical Compressor / Re: All LEDs locked on

« on: September 06, 2021, 09:10:44 PM »

Solder bridge in that area found and fixed (now 15.5 and 2.5 VDC between each leg of R36 and GND, was 15.5 and 0 VDC but no short to GND).

Thank you, fun build!

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LA502 Optical Compressor / All LEDs locked on

« on: September 05, 2021, 09:21:55 PM »

I’ve turn all the trim pots fully CCW. I am getting proper supply voltages (V+ and V-), even at U8/U9 comparator ICs. GRM signal is 0VDC. Otherwise unit appears to work (passes signal, get 24VAC at full gain, peak knob at 100 gets output down to < 1VAC, etc.)