Picture tube demagnetizing coil arrangement

In a housing with a frontal opening for a picture tube display, the frontal opening accommodating a removable aperture frame which covers the frontal juncture of the housing and the picture tube, the improvement comprising:

• a demagnetizing device for a picture tube for receiving demagnetizing current in a demagnetizing procedure, comprising a removable aperture frame (3) which closely surround the picture screen of a picture tube (4) and a coil (6,6') around the periphery of, and held on and within said aperture frame.