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Can anyone throw some light on a problem I have with my Behringer MX8000A?

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Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Wed Oct 26, 2011 2:44 pm

The problem being that for some reason, channels 21 and 22 in Mix A are now outputting through the Direct Outs!? How can that be? Have I accidently flicked a switch somewhere on the back as I've looked on the master section and all seems to be fine.
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby Hugh Robjohns » Wed Oct 26, 2011 3:09 pm

I think you're going to need to be a bit more specific....

But as far as I'm aware the channel direct outs come directly from the channel mute switch, post channel fader. The channel always carries the signal from the insert return which is normalled from the insert send... and the insert send is normally derived from the mic/line input stage.

However, if you've pressed the channel FLIP button then the insert send signal is derived from the Tape In socket instead.

Perhaps you should check the FLIP buttons and the plug-panel connections.

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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Wed Oct 26, 2011 6:34 pm

The signal is coming through Mix A as the channel light is lighting up, but only through channel 21 and there is no sound. I hope it's not another channel gone down.
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby OneWorld » Thu Oct 27, 2011 8:23 am

Why not mimmick the settings of a working channel in your channels 21 and 22. Yes there is a flip switch, the one at the top nearest the inputs, which flips between A and B. So get a signal coming in to ch 19, copy the switch and fader settings onto the defective channels and see what results you get.

I had one of these desks and lost a channel, in what seems like the same way as yourself (A wouldn't work, B would work). I used one of the 8 sub group channels instead, which meant losing the eq but I set the eq within Cubase anyway.

That being said, I managed to sell it for 200.00 and bought another fully working desk, including meterbridge for 225.00!
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Tue Nov 01, 2011 2:00 pm

Hi Oneworld

What did you do? Did you buy another make of mixer or another Behringer?
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Wed Nov 16, 2011 5:12 pm

I've just been reading, on the 'net, about other peoples Behringers having the same problem as mine. This one guy said that he had a problem with flickering green and red lights and no audio on certain channels and that it was a power supply problem. I remember that the PSU on mine had to be looked at before I purchased it. Could that be the problem I ask myself?
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby The Red Bladder » Wed Nov 16, 2011 5:39 pm

DJW wrote:I remember that the PSU on mine had to be looked at before I purchased it. Could that be the problem I ask myself?

You can safely state that every PSU for this model will fail sooner or later. The rectifiers are woefully undersized and there is almost no effective cooling for them. The caps are also undersized. The build quality of the whole thing is best described as minimalistic!
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Thu Nov 17, 2011 5:00 pm

So would I be right in guessing that it could be a PSU problem and not the desk itself? If so, how can it stop certain channels from working?
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby Hugh Robjohns » Thu Nov 17, 2011 6:25 pm

A PSU problem would affect all channels, not just a select few. There may well be internal power distribution issues -- dry joints, corroded connectors etc -- or just general internal reliability issues. But it will require an experienced technicican to fault-find for you.

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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Thu Nov 17, 2011 9:19 pm

Thanks Hugh, I'll get on to a technician.
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby necromunger » Thu Nov 17, 2011 9:29 pm

You can safely state that every PSU for this model will fail sooner or later. The rectifiers are woefully undersized and there is almost no effective cooling for them. The caps are also undersized. The build quality of the whole thing is best described as minimalistic!


don't you mean its a pile of [ ****** ] and should be thrown in the skip
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Tue Dec 13, 2011 12:50 pm

Right then, I've been checking my mixer this morning. I can report that channels 21 and 22 ARE working but at very low volume. I thought I'd lost them forever. I will still be taking it in for a service in the new year though.
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby . . . Delete This User . . . » Tue Dec 13, 2011 1:35 pm

it's likely to cost more to service than buy another


they're a really stupid internal design ... (blame Mackie for that, since behringer copied theirs so exactly, they included the same board faults.... )


the entire mixer has to be disassembled to get to just one channel....

(on a more sensible mixer, like the average Allen and heath, they're at the very least modular internally, so the single channel can be removed on it's own without having to undo every single nut and bolt on every single channel..... )
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Tue Dec 13, 2011 9:27 pm

I'll see what is said when I speak to the repair man. If it turns out to costly to repair, it may be time for a new desk - but which one? I've been reading up on Soundcraft range of desks, particularly the Live 8 24, are they any good? The LX7II also looks good.
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Re: Can anyone throw some light on a problem I have with my Behringer MX8000A?

Postby DJW » Fri Jan 20, 2012 11:02 am

I've contacted an engineer at last regarding the Behringer MX8000A to see what he says. If I have to go for a new mixer, does anyone here have experience of using the Soundtracs Topaz Project 8 or Soundtracs Solo?
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