Gregory's Server@haeckerfelix This is why we test all aircraft components and assemblies and the integrated whole like crazy for electromagnetic effects. Crazy unexpected effects among unrelated components if you don't control it. We try to avoid some situation like "This is the captain speaking. We've turned off the fasten seatbelt light and would like you all to stand up for the remainder of the journey so that the flight computer will stop cutting out."
@haeckerfelix congrats on figuring it out, by the way—solid work. I can't imagine linking those two items, even if the correlation was shocking me in the face.