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Total Recall working except modulation

Started by lwatford, April 12, 2019, 10:49:03 AM

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lwatford

Just finished a Total Recall, and the delay is working and sounds great. The modulation knob isn't introducing any modulation.

Voltages on IC9 are
-5.25-9.00
-7.17
-7.04-.09
-14.98
-7.17
-7.16
-7.05-.09
0

I get a nice sharp Triangle wave at Pin 7, and pin 2 on the Mod pot when it's all the way up. I can hear the delay time change when I move the mod pot. I've swapped IC9, reflowed everything around the modulation/clock section.

Any thoughts? Maybe I'm missing something easy?









lwatford


lwatford

Rookie mistake...wrong value resistor. Works great now.