by Steve Forney » Thu May 09, 2019 9:40 am
In order to bring the cameras back on line, the failed power module had to be bypassed by re-routing the data cable, inside the camera assembly, at both the depot and coaling tipple locations. The power module contains the internal microphone (and connection for an external mic), as well as the fan and heater. Only one spare power module is on hand, and is awkward to change out, so such surgery is best done on the workbench rather than in the air. Time and spare equipment constraints precluded a 100% repair on the failed camera locations. There is hope of restoring audio "soon."
Steve Forney