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Electronic Theatre Controls Inc

Swapping DMX Chip in a Source Four LED Series 1

Symptoms

The fixture powers up and DMX is present, but the DMX light blinks indicating that the fixture is not receiving DMX. Alternately, despite good DMX, the fixture flickers or drops out, despite other lights in the chain working fine.

Explanation of Issue

After confirming that your DMX source and DMX cables are working, the issue may be a failed DMX chip in the fixture. 

Solution

  1. With a long-handled 4mm hex driver, remove both 4mm hex head screws that hold the light engine to the fixture body. These are located on either side of the UI. 
  2. Pull the light engine straight out to remove it from the fixture body.
  3. Locate U11 and U12 on the control card — U12 is the spare DMX chip. 
  4. Swap U11 with U12, making sure to keep the shiny circle in the upper-right corner of the chip in the same orientation as the chip you're replacing.

 

The DMX chip is part number Z1458-F should you need to purchase a new chip. If this does not resolve the problem, please contact ETC Technical Services

 

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