Behringer Music - Page 9 - Recent Questions, Troubleshooting & Support

It sounds like a n overheating problem. Some component is running too hot and shutting down. This will not be a user servicable problem and it needs to go into the shop. Discuss it with the shop when you take it in to be sure they will have access to the parts they need. Behringer is notoriously slow to ship parts so if it's an exclusively Behringer part as compared to a general electronic part you may have to consider replacing the unit depending on what time frame you have to work with.

Flick your finger nail against the preamp tubes. This will tell you if any are microphonic which most likely the case. It usually takes a few minutes for them to begin squealing.

These amps have a few issues. I would take to a tech, and go over many of the poorly soldered connections on the circuit board.

It is the amp module. It need to be replaced

There has to be some internal problem for a fuse to blow. Putting in a bigger fuse can only cause more problems.

Chances are you've blown the output transistors. Speakon connectors cannot short out but jack connectors can and if it was not inserted properly you'll have presented a dead short to your powered mixer. In any event it is really bad idea to connect anything when it's switched on. If you're really lucky replacing the output stage (which will probably be dead short on the transistors) and re-adjusting the bias should sort you out.

After my FBQ 2496 began to go "wild", it finally went blank with a ticking sound. I tried pressing and holding the "Reset" and "Bypass" buttons, simultaneously during power on. It worked after 3 or 4 tries.

Some kind of feedback perhaps? Are you using a multi core with sends & receive inside it but NOT individually screened? i.e. "pick up" inside the cable? Is it both speakers? Try them one at a time in case one is faulty but affecting the other? Unplug the input leads & see if the speakers by themselves are making any sound ( a small hiss?) If the speakers with no input (but powered :-) makes no whistle then it's coming from other gear...... Also the speakers may have switch mode power supplies & if you don't have a decent ground you could have problems. Make sure you have a good ground connection back to the fuse board. If you studio is in a shack at the end of the garden running on extension cords you may need a local connection to ground..... Good Luck!

Unfortunately, behringer is not helpful in most cases. I suggest selling the unit and buying a better product, like mackie.

Unit has wide range power supply will operate on 100 volts to 240 volts without any change other than possible plug adapter to mate with each countries receptacle standard.

I think that rather than the mixer, that your front speakers may have a limiter built into the high frequncey amp. You may be asking them to do more that they are capable of.

https://elektrotanya.com/behringer_acx1800_sch.pdf/download.html You can download 2 manual per day, else you have to take & pass the electronics test :-)

It's probably the activate button. Maybe it is stucked, but more probably that is damaged so when you tap it with your feet, it's making these sounds... If you don't have any or very small experience in electronics, then take it to the electronics service center for electronics engineers to look it up, Cheers!

Pray. Maybe the God is playing it.

Try www.elektrotanya.com - you can down load 2 manuals per day, else pass the electronics test to get more :-)

Open unit and look for a cable that has fallen off.

Looking at pictures on line, you'll nee to remove the electronics panel - take out the screws around the rear edge at the back & the 3 at the top, behind the handle / in front of the panel. I would expect the panel to come out thru' the rear..... Be aware of the speaker lead - could be a bit short so you may need to disconnect it. Once the electronics panel (mixer & amp etx) is clear you should be able to get your hand inside / under the handle & undo the bolts. There's a possibility the if the handle is held on with bolts then there could be "blind" or "Tee" nuts under, so undoing the handle screws may be all you need to do? Take care though, because if they're normal nuts they could drop off into the gubbins! Good Luck!

In my opinion, due to the physical appearance of pmp4000 and pmp3000 look the same, it will most likely also have a common circuit and parts list (at least, most). Usually Behringer (and all the manufacturers), with the same series / sequence, using the same circuit, the difference is the number of channels only. You can compare the parts list on PMP3000 schematic, with your PMP4000. PMP4000. PMP3000 You can download from this link. http://elektrotanya.com/behringer_pmp3000_sch.rar/download.html Hope this helps. Regards.

It's probably not cost effective to repair it' Check the horn driver and the raw woofer to see if they are still good, and if so retain then as spares.