Question about Audio Players & Recorders
Most hum is caused by a faulty electrolytic capacitors. If the hum is accross both channels, then it's most likely one in the power supply part. Maybe the big one that filters the 50/60hz mains hum. The reason you will hear it in playback, is that a switch will be opened up when the mechanism goes into play. This switch connects the tapes pre-amp to the audio out circuit.
Posted on Jul 14, 2010
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Posted on Jan 02, 2017
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