Why is there no sound or very low level, highly distorted sound from one channel even though the amplifier power indicator is lit?

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Why is there no sound or very low level, highly distorted sound from one channel even though the amplifier power indicator is lit?

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A. The output stage of your amplifier is protected by fuses in the positive and negative power supply circuits. There are two of these “rail” fuses per channel. These fuses will blow if the output stage is short circuited (even for a moment) or if the amplifier is called on to play at very high levels into very low impedance speakers. These fuses are located in fuse holders on the back of the amplifier, or in fuse clips on the printed circuit board. Turn the amplifier off, then check for one or more blown fuses. Replace as needed with the same type and value of fuse.

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