SOLVED Parentheses filter knob does nothing

GarrettRSound

New member
I built this quite a while ago and the filter knob has never worked. I’ve taken it apart to muck around with the look of the enclosure and I’m determined to get it working before I box it back up.
As far as I can tell, I’ve done everything right. I stuck an audio probe to leg 1 of the pot and the signal is getting there so I thought maybe it was a bad pot, so I replaced it, and it still doesn’t do anything. I’m totally stumped. Everything else works exactly as it should, it’s just this 1 pot that makes no change when I turn it. 3AE680AD-3146-45C8-91DE-4BCEA346DAD5.jpeg
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are you getting different sounds at all 4 positions on the rotary switch?

can you hear any effect from the filter with any different settings when you rotate the distortion pot?

use your probes on you meter to test resistance between R22 and R23 to see how much the resistance changes at each end of the rotation for the Filter pot. how much change are you seeing in the resistance when you rotate the A100K filter pot?
 
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