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How to test this IC (IC400)

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    How to test this IC (IC400)

    Is there a way to test this IC? I have a signal tracer, signal generator & scope, just not sure about injecting signal procedure. Would this audio IC require voltage applied in order to test it? It is located in a Pioneer Elite VSX-40, current fault is no sound, right front channel went bad and has been repaired by replacing 2 transistors and 4 resistors.

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