Pedals makes loud sound when powers connected

You'd need to give us a little more information

What circuit is it?

What kind of noise is it? a hum, crackle, squeal?

What are you using to power it

Perhaps post some images of both sides of your pcb so that we check components and trace all offboard wiring to DC jack 3PDT and in and out jacks
 
You'd need to give us a little more information

What circuit is it?

What kind of noise is it? a hum, crackle, squeal?

What are you using to power it

Perhaps post some images of both sides of your pcb so that we check components and trace all offboard wiring to DC jack 3PDT and in and out jacks
is that enough info or do I need to take a pic of the wiring?
 
You'd need to give us a little more information

What circuit is it?

What kind of noise is it? a hum, crackle, squeal?

What are you using to power it

Perhaps post some images of both sides of your pcb so that we check components and trace all offboard wiring to DC jack 3PDT and in and out jacks


Its a delay circuit, its a noise similar to when you hold your finger on the tip of an amp cable when the amp is turned on
 
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.
 
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