[Al Skierkiewicz]

jp,
The fan is controlled by the micro proc and it in turn is powered by a series of regulators. I would remove the motor leads from the jag and then inspect for damage to the screw terminal. If the plastic is melted, it is likely that the two output terminals are shorted together. Since the Jag uses a bootstrap power supply, the output is always jumping to full output for a short period of time. I bet the symptoms are: power up, regulators come up and fan starts to spin, short on output shorts out during the bootstrap and the Jag senses the loss as a power loss and starts the sequence all over again.