Apart from the info needed to an accurate diagnosis mixers have been using 4560/4580 opamps since long time ago, some are SOIC or for insert pins in chassis then solder them or lately SMD devices, let me know a bit more such as Mixer brand and What primary circuit means?
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Apart from the info needed to an accurate diagnosis mixers have been using 4560/4580 opamps since long time ago, some are SOIC or for insert pins in chassis then solder them or lately SMD devices, let me know a bit more such as Mixer brand and What primary circuit means?