In a projection television receiver, a common switch mode power supply
energizes the convergence circuits, and other load circuits of the
projection television receiver. In normal operation, a switch couples a
supply voltage produces in the common switch mode power supply to the
convergence circuits. When, as a result of a fault, a supply current in
the convergence circuits is excessive, the common switch mode power
supply is decoupled from the convergence circuits and other load circuits
remain energized and operative.