I just bought one last night. I love it so far. I really don't no how to use it. My first question is how do I connect my monitors.? My next one is how do I use a mic. I have tried with the xlr input and it's very quite. Third what are the fader slide things on the bottom for? Fourth I do a lot of djing and this is the first time I ever bought behringet. How do I connect my laptop to the mixer and play music. I would appreciate if you could help me out. Thanks cody

A bad ground connection?. Try tightening the nut on the phono plug first. You can pull out that section where the cable hooks into and visually check the solder connections.

It's shutting down automatically due to heat peaking. You need to turn off until you are ready to use it.

These had a little switch on the far right side that shifted modes from stereo to main and monitor. Check the position as it is tiny push button. Also try sending line levels DIRECTELY into the power amp inpout jacks to verify the amps are both OK... if not, the repair shop is only option... there is only one main fuse for the amp and if one side is working, then the fuse is good.

Possibly a loose connection, or bad solder connection. unplug it from power.

If you think you are up to it geta soldering iron and some solder, and a screwdriver, and take the amp part out. be careful of the speaker wires. put some tape on each one and label them so you know where to put them back. after you got it out you might have to take some more screws out to get the board off of the chasis, so you can see under it. this is where all the components are soldered to the board. maybe use a magnifying glass. touch up anything that looks questionable.
do all over. you don't need to know what everything does if you just go all over. careful not to cause any shorts. you might see something that obviously needs to be fixed. you have found a problem. you can't fix something if you don't find a problem. do all over anyway if you think you still have to.

Put it back well enough to test it. then put it all the way back together, or continue to look for a problem, or take it to someone, like me!


Good luck





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If you don't know how to connect this... well we don't either because you did not tell us what your sound system is. The larger plug is what is known as a "Speakon" connector and is a fairly reliable speaker connection that is used now. For your use you will PROBABLY use either of the 1/4 inch jacks with a cable from the amp that will drive the monitor(s). If you have multiple monitors you will daisy chain them using the 1/4 inch jacks and SPEAKER rated cables creating a string of speakers with input going into one and an output from the same one to the next speaker and so on...USUALLY you will be limited to two speakers per amp output...

These are a nice unit... just bought three of them that were dead... I have repaired one so far. I assume you mean the blue LED is on indicating power is on. What I want you to test is if injecting signal on the BACK of the unit jack (power amp in) will create sound. If it won't then better exercise your warranty. The one unit I have completed repair had a bad 15 volt regulator in it... the second that is almost fixed somebody had blasted the input circuits... probably connected to a speaker output... don't do it... these are LINE and MIC level units. If you need to tap off a speaker output, use a DI box with the unit. The third unit I have not received yet. Drummer used the repaired one as monitor last night and was impressed with the power this unit has.

Here is the service manual schematics for your speakers:

http://elektrotanya.com/behringer_b2031.pdf/download.html

Scroll doen to "get manual" and click on it to download the manual... Do not click on the other downloads at the site, they are for viewers you don't need.

Take the schematics to a COMPETENT electronic service technician to get units repaired. You obviously bought units that had been hacked before...

1000 Watts? Well, those are peak values. !000 watts RMS into a 12 inch speaker and it would smoke... this is some of our inflated advertising. But that is beside rhe point... now on to your problem: What you are having is a ground loop. You may have to do more than one thing to correct this here is the things to do in the order to do them to solve the problem:

1. Connect the piano and the speaker to the SAME power source or receptacle, even if you have to run an extension cord, three wire of course. Plug all of this ONLY into a grounded outlet, if your house has only two wire plugs, then you need to get an electrician to install a grounded receptacle.

2. Use Balanced lines. This means XLR or TRS balanced cables between the piano and the speaker. Use the 1/4 inch jacks output, not the RCA ones.

3. Since the AUX outputs do not support balanced lines, the next step require you use DI box. They are about $20 from Guitar Center and others. With very short 1/4 inch mono cable connect the piano to the DI box from the L/R mono piano to the high impedance input port of the DI and set the ground lift switch to "LIFT". Use an XLR to XLR cable from the DI box to the speaker. This last step if needed is the last thing in our bag of tricks to break the ground loop that can cause the buzz. Dirty power, if you have lamp dimmers can be a source of the noise.

You need to have the speakers re-coned. Unless they are really really good speakers this will cost you almost as much as new ones. A JBL authorized repair facility should be your next call. Replacing them is probably the answer

Hi, first get a battery and a wire to comfirm if the speakers are still working.
If the speakers work that means one of your connecting cables is bad and it needs to be replaced.

You can just do a general troubleshooting of all the cable for connecting.

Good luck.