Hi Mike,
Have you tried testing the fuses on the chassis? You might also want to try switching the modules and cables. Also switch the 6036E boards to see if the error seems to follow the board or the module or the chassis. Once we narrow down which component of the system is causing the error then you may need to send it in for repair. To continue trouble shooting or if you've determined that one part is broken you can call 1866-275-6964 and enter your service request number.
Regards,
Sarah Miracle
Applications Engineer
National Instruments