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Electronic Theatre Controls Inc

Congo Sr - IO DMX IC's


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 DMX Output


The DMX IC right behind each DMX port is visibly damaged.

IO Picture - DMX IC's highlighted and labeled.png


Socket ICs D7 and D10 can be easily replaced (PN# Z1482-F). 


If replacing the socket IC's does not fix the problem, the next step up the line is IC's U5-7 and U8-10 (PN# Z9237-F), but these will need to replaced by an experienced technician to avoid damaging the board.


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