Unison Legacy Button, Fader and Relay Stations Repairs
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.
| Problems | Cure |
|---|---|
|
LED's work when unbound but do not when bound |
Reprogram Echelon Neuron IC or replace node PCB 7080B5041 |
|
Fader stations losing function completely |
U1 PAL 7080Z2011-1.0 |
|
Node board looks dead. (If working or powering up, a red LED should blink when node board is plugged in) |
Check fileter L1. L1 may be open. If L1 has a red dot replace it with L9022-F per ECO 8542 |
|
Station will not bind, no red LED blink when plugged in |
Replace and reprogram Echelon Neuron IC 70780Z2025-1.3 or PCB 7080B5041 |
|
Satellite boards flickering on output |
Socket ICs U3 or U4 |