Question about Music
One channel not working in my amp
Apply a music or tone source to each input one at a time and see if signal comes through.
If you have 2 channel output, when the music or tone is on an input, switch it between the 2 outputs. It may just be dirty swith contacts, fader contacts, dirty or damaged interupt contacts on the jacks, or even the wrong length if using unbalanced or balanced 1/4 inch plugs.
If one channel is dead, you use a scope on the chassis at each amp IC chip/stage to see where it drops out. Even without a schematic you can loctate the 4558 IC's or the TL074, TL072, or TL071 inputs and outputs on their respective data sheets and use those to navigate the audio stages in the chassis.
Posted on Oct 29, 2012
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Posted on Jan 02, 2017
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