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Electronic Theatre Controls Inc

ColorSource Raceway DMX Outputs Not Powering On But Voltage is Correct


The information in this post is provided to assist in troubleshooting. Perform work at your own risk. ENSURE ANY POWER FROM DEVICES HAS BEEN DISCONNECTED BEFORE SERVICING ANY EQUIPMENT. If you do not feel comfortable performing the work, please contact us or your local service center. Be aware that ETC and its Affiliates are not responsible for any damage or injury caused by service of our products by anyone other than us or our authorized service providers, and such damage is excluded from the product’s warranty.


My ColorSource Raceway DMX output Ports have active DMX and 24VDC coming into them, but they are not powering on.  


It is possible the red (+) and black (-) wires are reversed from the power supply, even if landed correctly on the power supply.  This will not damage the DMX output ports, but will fail to power them properly.

The ColorSource Raceway is available with the Termination box on the left side or the right side.  This is most prevalent in right side Terminations boxes.



The following steps require access to the Termination Box.  All power circuits terminated in this box MUST be power OFF before working inside and proper lockout/tagout presedures should be followed.  Please contact ETC Technical Services and/or your Electrical Contractor if you have any questions about how to accomplish this.

  1. Swap the red (+) and black (-) wires on the power supply. The power supply is inside of the Termination Box.  
  2. Reassemble Termination box and confirm if the DMX output ports are not powering properly.
  3. If the issue continues, please contact ETC Technical Services.
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