I have an expansion processor that won't power up. I powered up the expansion carrier first, then the primary cabinet second. The LEDs on the expansion processor come on for fifteen seconds and then go off. I have a full compliment of modules in the primary cabinet, a 206 (that test good) in slot one and the expansion processor in the P slot. It powered up fine at my office but not at the customer location. I performed a system reset, it did not help. Any ideas?