I'm not getting any DMX output from my Express console ports.
Description/Explanation of Issue
DMX transceiver chips may have failed. This is often due to an overvoltage event, which can be triggered by a power outage or storm.
The Express has 2 socketed DMX chips (ETC PN 216-F, old style) located on the I/O card in the brick. Position U1 is for DMX port 2 and position U2 if for DMX port 1. These chips will need to be replaced.
DMX chips can be ordered directly from ETC via our online shop, or from any ETC dealer or lighting supplier.
Details on how to replace the chips can be found in this PDF: Express DMX Driver Replacement RevB 2011.pdf