Author here. Unfortunately after removing the wall switch, I found a newly installed mini-fridge would cause signal dropouts sometimes when the motor started or stopped. Moving it into an adjacent room reduced the frequency of dropouts, but I still got them periodically (and can no longer hear the mini-fridge to tell if dropouts are correlated). A few weeks ago I unplugged the mini-fridge because I barely used it and it had filled with ice. Since then I have not gotten any dropouts (aside from static shocks in my room), but haven't played my Wii long enough to know with confidence it won't happen again.