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Audio Troubleshooter Guide: Stop! What’s That Sound?
https://www.thepodcasthost.com/editing-production/stop-whats-that-sound-troubleshooting-audio-issues/
Your audio equipment can pick up electromagnetic interference from power wiring. This causes one of the most common occurrences in an audio signal: hum. The interference comes in the form of a 60 Hz buzzing sound (50 Hz in Europe). Magnetic interference picked up by audio cables, and ground loops are the two most common causes.
Notes on the Troubleshooting and Repair of Audio Equipment ...
https://www.repairfaq.org/REPAIR/F_audiofaqa.html
If at times, it is necessary to turn the volume way up or possibly to tap or whack the unit to get the sound in one or both channels to come on when the unit is first powered up, the speaker protection relay could be faulty. Receivers and audio amplifiers often include a set of relay contacts in series with each output to protect the loudspeakers from power-on and power-off …
Troubleshooting Audio Electronics Without Tears
http://conradhoffman.com/troubleshoottut.htm
Some audio equipment may have ground loop breaks. In that case you should measure about 10 ohms with 1 diode drop in each direction with your meter on "diode check". Make up a discharge tool using insulated leads and a low value resistor, say 50 ohms and 5 watts, for safely discharging power supply and other capacitors.
Notes on the Troubleshooting and Repair of Audio Equipment ...
http://www.repairfaq.org/REPAIR/F_audiofaq2.html
If the recording is still muddy, your deck may have electronic problems like excessive bias (check to make sure you have selected the proper type of tape or bias setting), a worn record/playback head, or the heads or other parts may be magnetized (see the section: "Tape head demagnetizing"., However, dirty heads as well other mechanical problems can also result in …
Basics of Troubleshooting Sound Systems - Support - …
http://whirlwindusa.com/support/tech-articles/basics-troubleshooting-sound-systems/
Murphy's Audio Law #10: “The probability of having sound system failure is inversely proportional to the amount of time remaining until the performance.”. We've all experienced it: there were problems with load in or set-up, time is short, the system is set-up with only a few minutes to spare and of course, something works improperly or not at all. Although the first instinct might …
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