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So, how does one test a deflection yoke?

April 26, 2017deflection Test Yoke

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So, how does one test a deflection yoke?

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Here is a brief tutorial: The deflection yoke consists of the horizontal coils and vertical coils (wound on a ferrite core), and mounting structure. There may also be some additional windings on the same assembly in some designs for various functions like pincushion correction and raster rotation. The following deals only with the actual deflection coils – the others can be tested in a similar manner. If possible, compare all measurements with a known good identical deflection yoke. Of course, if you have one, swapping is the fastest surest test of all! Note: it doesn’t have to be mounted on the CRT which would disturb purity and convergence adjustments but see the caution above about drilling holes in the CRT face plate!