[Al Skierkiewicz]

Tony,
There is a possibility that there is shavings in the device. However, if it is an older jag, it might have succumbed to the dreaded FET driver failure. It is also possible that the current sense resistor has unsoldered itself. This leaves the low side of the output stages open. I do not know if the firmware checks for that condition but I have opened a few Jags where this has occurred. As others have hinted, be sure that the terminals have been correctly crimped by checking the output of the Jag with a voltmeter. The resistor lives near the negative input terminal (upper left when viewed from above with the jumpers toward you) and is the largest surface mount resistor in that area.