Buzz sound - Mackie 1604 Vlz3 16 Channel Mixer

There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this:
If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this. View image.
If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

Try different cables. That would be the most simple and cheapest fix.

Sounds like a classic ground-loop issue. Sound-on-Sound had a great article some time back that may help you.

normally a buzzing sound means a grounding problem, or a component has failed, unless you have the proper equipment to check these items,, your going to have to take it to a shop that does, sorry I know thats not what you wanted to hear,, but heres a hint, Ive found that a shop that deals in instruments and sound devices charges a lot, I have found a TV repair shop in my town, that can check my band equipment,, and its much cheaper, and I usually get the stuff back much quicker too

so its a buzzing noise. are your turntables grounded? some dont have to be. the buzzing could be several things feedback from something around you or the mixer is buzzing cause of to much power. just mess around w stuff your not gonna break it. and what i mean about that is more wires check wires. dont preform open heart surgery on your equptment. sometimes the buzzing means the faders are going i own 3 vestax mixers and on my pmc 17a right before the faders went i had massive buzzing sound.

Are the strings hitting the frets and making a buzzing sound or is it actually coming from the bridge? Make sure the saddles on the bridge are secure. If the buzzing is caused by the fret then adjust the bridge height and/or truss rod. If the buzzing is coming from the bridge and cannot be cured it may be worth investing in an aftermarket bridge.

Without power to the unit no sound should be generated. Make sure there are no other connections.

MAYBE you have a wall transformer behind it that is buzzing. MANY wall transformers develop buzz.

Another source is flourescent lights and even some of the low voltage halogens have noisy transformers in the base.

Hi there. Disconnect all auxiliary inputs. Still buzzing? Internal problem. Not buzzing? External problem.
Thanks
Paul