I work with a community theater company that owns an NSI MC 24/48 which has been solid as a rock for years. Our lighting designer took the console apart to clean it and the unit was working fine for an hour or so during focus. The overheating light came on and all dimmer control was lost. He rebooted the board and the overheating light went off however the board functions (GM up to 100% or individual channel adjustments) did not register on the monitor. The board did not turn on any fixtures. It was about 82 degrees F. in the building at the time. Any assistance would be greatly appreciated.