I'm working from old memories here but iirc the degaussing circuits in TVs and monitors only work after they've cooled down. He didn't have to leave it all night, maybe an hour if that would have done.
I'm working from old memories here but iirc the degaussing circuits in TVs and monitors only work after they've cooled down. He didn't have to leave it all night, maybe an hour if that would have done.