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Electronic Theatre Controls Inc

Sensor3 No output on one or more dimmers/lugs


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.


No output on one or more dimmers/lugs

Description/Explanation of Issue

Most likely caused by a failed output dimmer pin, a broken solder joint, or a solder short. The six large ICs (U5-U10) near the larger edge connector control the outputs. Check the pins to make sure there are no broken solder joints or shorts. Also verify that there is no corrosion due to liquid damage

An entire bank of outputs may indicate that one of the buffer ICs has failed entirely

If there is corrosion, the board will very likely require replacement


If there is a solder short and you are comfortable with using a soldering iron, carefully remove the solder short.
Otherwise contact an ETC Authorized Service Center for repair, or contact ETC Tech Services to begin the RMA process

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