Ok I was being careless with my dl4 while doing the double presets mod and I shorted something out. The lights work, the tempo LED blinks and responds however the pedal puts out hissing only. There is not even a hint of guitar signal.
On the board I can hear one of the components physically creating a screeching/hissing noise. I need help finding out what it could be. It sounds strange but I cannot figure out what is making she screeching, I have inspected it with a 1/2 pipe to my ear trying to narrow down the area but It is hard to track it down.
Here
http://home.comcast.net/~aaronmacomber/dl4.jpg is a link to the general area on the board where the sound is coming from, and i have indicated the components that I have replaced.