Dual Stepper Motor Shield Trouble Shooting

I bought a Dual Stepper Motor shield (ITEAD). I have hooked it up, checked and re-checked the wiring but I just get buzzing from both X and Y, when I use the test program. I set the pin call outs for X and then change them for Y. I get about the same thing for both of the two different stepper motors. I know that the motors work fine with other driver boards. I tried to tune the pot on the Y axis but that didn't help. There doesn't seem to be any difference when I plug in a 2 amp, 30 volt power supply. It does not run any better or buzz louder. I just get the same rhythmic sound like the motor is trying to turn.

In light of what I have done so far, what should I check first?

Maybe a pic of your wiring would be helpful for us.

The X motor is a Stepper Motor: Bipolar, 200 Steps/Rev, 28×32mm, 3.8V, 0.67 A/Phase

The Y motor is a 57byg stepper motor:

I verified that the power select switch is on 5V.
I tried reversing the 2A and 2B on each channel. I get the same buzz but not as strong. I can hear the program cycle through the 3 settings step modes with different pitched buzzes .

I added a picture of the wiring, minus the extensions. I have tested them with the meter and with the other motors.