Sensor rack issue

whilst i'm not familiar with sensor dimmer modules specifically, wouldn't that usually mean, that a thyristor is gone? when they can't fire the impulses anymore, they let the current pass through, so the light is always on...

whilst i'm not familiar with sensor dimmer modules specifically, wouldn't that usually mean, that a thyristor is gone? when they can't fire the impulses anymore, they let the current pass through, so the light is always on...

That is probably a good place to check, as there isn't much else in a standard dimmer module to go wrong.  It sounds like it has failed in an ON state. Moving the module to a different slot will confirm if it is a module issue or not.   You should be able to order a replacement module from your nearest dealer or ETC office.  The Part number would be located on the SCR itself, and starts with a "Q" like Q141".  They are simple to replace.

Thanks everyone. Moving the module to a different slot resulted in the same issue. I talked to an ETC tech, and the module has been sent in for repair. 

Thanks for the help!