The facility dish is sweeping for some ancient signal, the terminal tarnished with age and disuse. However, the dust is

The facility dish is sweeping for some ancient signal, the terminal tarnished with age and disuse. However, the dust is smeared in places, where modern components have been wired into the original equipment. Whatever this terminal was repurposed for, it is currently malfunctioning. The modern tech has been inexpertly installed, and the central wiring loom seems to have short circuited.