I suggest you spend a few minutes taking close-up pictures of both sides of your board and the wiring connecting the footswitch, power, and in/out jacks. add more detail about the pedal -- WHICH delay? Does the bypass switch work OK? Does your power LED come on when you hit the footswitch?
in general the more info you provide the less of a guessing game you are asking everyone else to play.
no good way to tell whether it is a wiring issue, soldering issue, short to ground or parts issue without the pics. Some folks resize the pictures to make the size smaller, and other people put the pictures on another site and provide a link to them.