When I switched to LED lamps in my motorhome, and then in my home kitchen undercounter lighting, I am experiencing the same problem:
Switching on CERTAIN (not all) of the LED fixtures wipes out TV reception on SOME channels.
Turning the offending LED lamp off, and the channel reception comes back.? Yes, the LED fixtures have the required FCC certification (so much for that, huh?).
Has anyone had experience with using ferrite beads to help with this problem, and if so, which beads, and where did you place them?