Greetings We have 32 Elation Opti Tri Pars in our high school theater that are about 5 years old. About 2 months ago one of them stopped responding. The address doesn't light and it gives us an intermittent red single flash of the LEDs. Yesterday (6 DAYS TO CURTAIN) two more started doing the same thing. We have separated them from the DMX system and there is no change. Any insights?