T300 SN 532012486 Code on the left display says 76-73, shut down during operation and won't start just beeps twice flashes the code and shuts off again. I've replaced the battery, leads both positive and negative, the alternator/belt, disconnected cleaned and reattached every plug I can find on the machine and now have replaced every relay in the fuse panel. I'm lost and need help or if anyone is a certified tech in the NH area and wants to work on it I'd be willing to pay to have it fixed. Thanks