Question about Audio & Video Receivers
If what you mean is a low humming sound when the volume is turned down to minimum level, this is usually from power supply filtering problems. Most of the time this is from the electrolytic filter capacitors going out of spec with age and use, and or voltage retulation problems.
If the sound is quiet with the volume turned down, and the hum or buzz increases with the increase of the volume control, this is usualy due to a ground loop problem between the associated equipment connected to the amplifier, or a bad interconnect cable.
Posted on Apr 26, 2008
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