Abstract: In an electro-optical transducer system employing a cathode ray tube having a substantially frusto-conical body terminating at its wide end in a viewable face plate and at its narrow end in a cylindrical neck and having a deflection yoke substantially permanently bonded thereto adjacent the junction of the neck to the body by intermediate mounting means in a manner which inherently provides unwanted stresses upon said yoke, the improvement comprising: yoke stress relief means mounted upon the neck and in contact with the yoke. The yoke stress relief means can be in the form of a circumscribing clamp which is affixed to the neck of the tube and in contact with projecting ears on the rearmost portion of the yoke.