Posted by Plop Plop on
URL: https://www.es-forum.com/RF-detector-for-lcd-led-displays-tvs-tp4030931p4031404.html

You say " glass fibre around the power supply helps a lot". What is this magic glass fiber please? I have wrapped ali foil around switching power supplies ( very dirty).

A linear power supply will not make any thing but 12vDC so needs no cleaning.  It will have an electric field going to it and a mag field at the box but after that and near to you nothing but clean 12vDC. Use a shielded cable to the box if you need to.  I run my TV and computer and lights of one.