Abstract
Past reports about TV screen color error describes relation of magnetic field strength and degree of error. In this paper, we investigate relation a direction of magnetic field vector and TV screen color error. And, we did demagnetizing which removed the magnetism from walls and floor, then measured magnetic field vector distribution after demagnetizing. As a result of comparing vector distributions before and after demagnetizing, it is understood that a vertical component (z-axis-component) of a magnetic field is a cause of error.
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