The ETMX ESD got stuck again, with both the bias and all quadrants at a constant negative value.  Jeff B and I drove down the the end station to reset the driver by toggling the red button on the driver box.  Jeff has a picture of this and will add a note to the operator troubleshooting wiki about this problem.  

This has been happening more since we installed the low noise driver (which was probably an unnecessary change for EX where we do not plan to use it).