by tpryan » Sun May 06, 2007 3:38 pm
Do the status LEDs on your PS03 stay lit when you connect the modules? With the negative lead of your meter connected to J3, pin 2, measure the voltages at J3, pin 1 and J3, pin 3. Then, carefully measure the voltages at U4, pin 3 and U5, pin 2. Do not short the pins with your meter probe! Let us know what you find.