Does Samsung give these ferrite cores as an afterthought, it's possible as an alternative to providing an improved high quality (shielded) power cord? In a single CNET forum thread (on ferrite cores), Proffitt writes that ferrite cores protect your "sign" from the results of a power cord spewing radio http://augustovaei.pointblog.net/Considerations-To-Know-About-ferrite-core-electric-filter-31218303