I built the D-lay 2.5 with the Tap Tempo mod and I’ve checked everything I can think of but I can’t seem to figure out why D1 led isn’t working. Any suggestions?
Verify that you have power and D2 is blinking. The RATE pot is changing the speed. If so, remove power. Remove IC1. Reflow the solder on all pins of IC1 socket particularly Pin 3. That pin supplies voltage to the D1 LED. Confirm the polarity of D1. The cathode must connect to ground.