![]() ![]() So, if you have an integrated amplifier/receiver and disconnecting the inputs eliminates the problem, then the ground loop may be the cause of the problem. However, not everyone will be using separates. If the hum goes away a ground loop may be causing the problem or the issue may be coming from the preamp or the interconnect between the pre/pro and the amplifier. Make sure that the speaker wires are not anywhere close to any power lines as this may cause interference of the audio signals. If you hear a humming or buzzing noise after doing this, then the problem may be the speaker wires or amplifier. Also, disconnect all the sources from the power plugs. You will need to disconnect your amplifier from your pre/pro and leave the wires connected to the amplifier. Disconnect your amplifier from all the sources However, if the hum is persistent will all your sources, you can proceed with the troubleshooting. You can also try using a different cable for that source and if the hum persists get that player checked out or replaced. If the hum or buzz only happens when one of the sources is connected, you will need to disconnect it. This will help find the possible root of the problem if it may be coming from your sources. Use different inputs on your pre/proĭisconnect all of your source inputs from the receiver/preamp/integrated and try one input at a time. If the buzz or hum goes down as you turn down the volume, your media sources/interconnects may be the problem but if the hum/buzz persists then the problem may be coming for your preamp/AV processor/amplifier or audio interconnects. How to troubleshoot a hum or buzz in your home theater 1. So, before we look at how you can fix a hum or buzz in your Audio/Visual system, let us look at some of the troubleshooting steps. Doing this will help you find an easy fix for the problem. The most important thing to do if you are facing this issue is to troubleshoot your system and find the root of the problem. In other cases, the hum or buzz can also manifest on your display screen as moving wavy lines or diagonal bars. Hum can also occur within other equipment in your home theater such as the receiver, preamp, or even amplifier and this is known as a mechanical hum. Faulty media devices/AV processor/amplifier.Poor shielded and low-quality audio cables. ![]() Interference between the power and speaker cables.Ground loops due to different electrical potential.There are several reasons that your speakers from either your TV, soundbar, headphones, or dedicated speakers may be making these buzzing or humming sounds A hum is a softer noise that comes from your audio system usually for lower frequencies of about 60 Hz while a buzz is more of a piercing and irritating sound usually associated with higher 120 Hz frequencies. You can easily differentiate between humming and buzzing noise from your entertainment system. ![]()
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