ahh, EMC problems...fond memories...
We used to set off casualty control drills by keying a UHF walkie-talkie next to the turbine local control consoles, making the gages go nuts.

Lewis, as for your light, thanks for the info. Has VCM/eco mode been working normally since the reset? Some gremlin in the 'puter just didn't want to punch out of work that evening, I suppose.