LED problem on distortion pedal?

Recently I have bought a DOD supra distortion pedal, it works fine exept LED, when I open it LED wasn't attached anywhere so I attach it where it should be, but when I engage pedal LED doesn't shine, but when the pedal iz OFF (clean tone) LED shine. o.O Can someone help me PLZ! THNAKS!

If you are ABSOLUTELY sure the LED is connected in the right place, reverse the connections and see what happens. Failing that, look harder for the right place !