Expression 2x - DMX Troubleshooting and Components
When there is no DMX or bad DMX
If all DMX ports do not work, the DC/DC converter may have failed. Please send to ETC for repair.
If just one port is dead:
- Swap in a good DMX IC into the socket of the bad DMX port. If there is no DMX 4 port, that IC can be freely used as a spare.
- If DMX IC swap does not help, swap in a good Opto IC (Z423, "6N137") into the socket (see diagram below). If there is no DMX 4 port, that IC (Z423, "6N137") can be freely used as a spare.