SOLVED Aion Fx 424 Preamp no effect

itstimtime

Well-known member
I thought this was a pretty straightforward build (although I didn’t have a 110k resistor, so I just put a 100k and 10k in series) BUT I have no effect when pedal is engaged. Bypassed I DO get signal.
Any ideas? And no, I don’t have an audio probe 😖

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It could be literally anything. Check your resistors and your capacitors. The polarities look good. Look for solder bridges on the back side. So you have power in all the right places?
 
It could be literally anything. Check your resistors and your capacitors. The polarities look good. Look for solder bridges on the back side. So you have power in all the right places?
Yea nothing seems out of place and I reflowed the bottom before adding the pots. I get power to the LED when engaged. The IC’s are brand new from mouser.
 
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