Build Your Own Clone Message Board

Finished my chorus pedal and it sounds amazing, but noticed a problem last night. I put the resistor in for the flashing to rate change LED. Also used a superbright Blue LED. As long as the pedal is on battery power the Led workes fine and flashes with rate changes. Very slow with rate knob left very fast almost strobelike with rate knob fast full right. The problem is when I plug the pedal into a 9v power supply the LED only flashed for a short time and then quits. Also if I increase the rate the LED quits. Only happens with a 9v power supply. Any suggestions?
Thanks
AGW (aka Dana)

does it do it with a regular brightness led? if yes, maybe double check that you used the right value resistor for the blinking led?

Did you remember to remove the 4.7k resistor?

Try replacing the 470ohm resistor with a 1k or 2.2k....maybe even try the extra 4.7k that came with your kit.