WIthout a quality audio interface the answer is you don't... You need to procure an audio interface for the computer. The internal audio systems of computers are too noisy to get decent results. The manual for the mixer will show the typical studio connection with a suggested audio interface.
First thing is to get a can of CRC226 from Home depot in the electrical dept. Put a little on a q Tip and work it into the area between the button and the panel. work the button a little bit sideways. Using the point of a scalpel or Xacto knife from one side, gently pry up by sticking the point into the side of the button and levering it up. Once it is up, apply more CRC226 around to lube the button. Be gentle... often contamination gets between the button and the hole in the panel.
The mixer should have the same sound quality... the effects MAY be quite different. It is hard to know what you are refering to regarding sound "quality". One must setup the mixer correctly. Critical things are the trim controls and faders. Your faders should be near the unity setting when adjusted. Setting the EQ'a ia important and if you are stereo usage, setting the pan control can be important.
Check teh power supply output voltages. If no voltage the main switcher has failed. One needs to be adept at electronic repair to repair this and have proper tools and equipment. The switcher runs directely off the input power and work on that portion requires using an isolation transformer for personal safety.
You neede to do some troubleshooting. Mute the chanels one at a time. Turn certain controls looking for CHANGES to the noise you are getting..There are far too many possibilites to cover here so we need to narrow the possibilities.
First thing: Is the board powered from the same receptacle or power source that your speakers or amps are powered from? If NOT then MAKE IT SO even if it means running an extension cord to power the mixer.
I answered a similar question, but want to add that be careful of SUPERSONIC feedback that you can't hear but cooks out your equipment... DO NOT boost highs excessively and watch the levels sent to the speaakers on your indicators... The monitor to mic feedback is very common and if it is above what you can hear, the amps may cook out the speakers, especially the tweeters.
You will need an oscilloscope and a good grounding in electronic servicing to attempt a repair.
But, check the signal routing. Refer to the user manual.
It sounds like you're experiencing a couple of issues with your Behringer Xenyx 1204FX mixer. Let's address each of these problems separately:
DSP Display Not Illuminating: The fact that the DSP display works when you press down and turn the knob suggests that the issue might be related to the display itself or its connection. Here are a few steps you can take to troubleshoot the problem:
Check Power Source: Ensure that the mixer is receiving proper power and is turned on. Sometimes display issues can be caused by power-related problems.
Connection: Make sure the ribbon cable or connector that connects the display to the circuit board is properly seated. A loose connection could be causing the display to not illuminate.
Faulty Display: If none of the above steps work, there might be a problem with the display itself. You may need to contact Behringer support or a professional technician to get the display repaired or replaced.
AUX 1 Send Not Working: If the AUX 1 send is not working as expected, there could be several reasons for this:
Routing Settings: Make sure that the AUX 1 send is properly routed to the desired destination. Check the routing options on the mixer to ensure that the signal is being sent to the correct output or destination.
Level Controls: Verify that the level controls for AUX 1 are set correctly. Make sure that the AUX 1 knob for the specific channel you're working with is turned up.
Effects/Processing: If you're trying to send a signal with effects applied, check if the effects are set up correctly. Sometimes, an incorrect effect or routing setting can affect the AUX send.
Cable and Connections: Ensure that the cables connecting the AUX 1 send to external devices (such as monitors or effects units) are functioning properly and securely connected.
AUX Master Level: Confirm that the AUX 1 master level (usually located on the main output section of the mixer) is turned up to an appropriate level.
If you've gone through these troubleshooting steps and the issues still persist, it might be a good idea to consult the user manual for your Behringer Xenyx 1204FX mixer for further guidance. If the problems continue, you may need to reach out to Behringer support or consider seeking assistance from a professional audio technician or repair service.
Hello Geoff, try using an external processor and check that it works well, if so, the problem is that you have the Jack connectors of Effect sending and those of Return of Effects, dirty
Apply a couple of drops of oil, type WD40, to a Plug connector and insert and remove them repeatedly in each connector Jack for sending and returning effects
I hope you can solve the problem, comment the results
Greetings Franco Dosil
Hola Geoff, prueba usando un procesador externo y comprueba que funcione bien, si es asi, el problema es que tienes los conectores Jack de envio de Efecto y los de Retorno de Efectos, sucios
Aplicale en un conector Plug un par de gotas de aceite, tipo WD40 y entralos y sacalos repetidamente en cada conector Jack de envio y retorno de efectos
Espero puedas solucionar el problema, comenta los resultados
Saludos Franco Dosil
https://media.music-group.com/media/PLM/data/docs/P0A8M/PMP1680S_PMP980S_PMP960M_M_EN.pdfhttps://c3.zzounds.com/media/PMP1680S_P0A8M_OI_EN_ES_FR-df44b2314272dfc61a7cabe5bb88ecce.pdf
Check all the wiring connections on the speaker. Check the plug in points for the cables are not loose in the body of the speaker or the connector plugs themselves are not loose in the actual plug sockets.
Next you will need to get inside the speaker body to check the connections and soldered joints. Take a good look at the back of the cable plug sockets and to the back of the actual speaker cone connections. Check each wire at Both ends for damage. No sound at all suggests the issue might be at the 'Input' where the cable plugs into the back of the speaker body.