Crackling sound commenced a week ago, & now there is no sound at all from the left channel. Re-configured the speaker setup & still occurs. Swapped the speakers around & it was still happening on the left channel. Model is SR-6200.
Re: No output from left channel after crackling sound
Marantz SR 5200/6200 lost audio or crackling on left or right channel except in mode s-direct is now fixed ! The root cause is a defective inegrated circuit on DSP board (the one with digital inputs). To fix it change the chip CS4391 by a new one or better by the improved version CS4392. On my device a capacitor was cut close to this IC : replace one 1uF after changing the IC. For any question search me with my callsing "F5RCT"; i have a spare IC for the one who is able to change it ! I'm amateur radio and engineer
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Without knowing what make and model of whatever you're asking about we can't be specific.
But if all outputs are distorting. Either the preamp is driving the amp too hard, or the amp is fried and needs repair/replacement.
That is a common symptom of not properly grounding of negative side of the output of power amplifier section.Just resolder all component parts joint in power amp.sectiton and double the solder all negative ground.Also clean the pots of all volume controls and selector with a lighter fluid or desame that fluid so whatever sound or crackling noise eliminated and works normal again..
Hope it may help you;;