Question about Pioneer DJm 400 Professional DJ Mixer

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One Output low on DJM 400

Hi, I have a DJM 400 Pioneer mixer, I'm having trouble with the output levels. It seems the left output is only putting out about half the sound of the right output. I only notice this one i hooked it up to a much louder sound system and cranked it up. I have been though a process or elimination by using different cables, mixer, CDJ'S and sound system, it is only once i hook the DJM 400 up the problem occours.
Have you had this problem asked about before and what may i be doing wrong or is the mixer needing to be repaired.

Regards

Tom

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This may not be the correct solution, but have you checked the switches on the back of the DJM-400 to see if one output is set to "PHONO" mode?

Posted on May 16, 2009

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I have a djm 400 and it has started producing a buzzing sound through the speakers. I can take the same speaker cables from the djm 400 and hook them up to my backup mixer and the buzzing goes away. What...


Does it buzz through cans? (headphones). Try listening on headphones (turn off any amps and speakers) on cue to each channel you use and to the master output. is it stil there? if so it's an all round earthing fault. If it's all good through the cans (sorry...I mean headphones), try it with the amp/s on again. If the buzz is back it souds like the screen on the main audio output connecters has come off inside.
It's a quick fix, but if you have never used a solder iron, take to someone who has.

Jan 07, 2011 | Pioneer DJm 400 Professional DJ Mixer

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Hi, I have a DJM 400 Pioneer mixer, I'm having trouble with the output levels. It seems the left output is only putting out about half the sound of the right output.I have used different RCA cables,...


Please try a set of headphones. If it is balanced in the phones, then I suspect trouble might be in the muting circuits of the main output.

Next test is to verify the outputs using direct inputs to the CD input...

Dec 01, 2010 | Pioneer DJm 400 Professional DJ Mixer

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If your CD player works hooked up to the DJ board, then try hooking the line out of the board into a auxiliary in or line in in or record in on your receiver using the appropriate cables.Try the CD in first and if there is too much signal then use the CD/Tape in. You need to match the output signal of your board to the input signal of your amp. Hope this helps.

Oct 22, 2010 | Pioneer DJm 400 Professional DJ Mixer

1 Answer

My DJM 400 one of the outputs is louder and has distorted sound what do I do?


First verify that one channel is bad by swapping the output leads and seeing the bad audio comes from the other speaker. Assuming it does, you probably have a bad output driver on one side.
This can happen if one powers part of the system from different receptacles in a venue and electrical disturbances destroy one or more audio interconnects. ALWAYS power ALL interconnected equipment from the same source, even if you have to run an extension cord between power amps and the mixer.
You will probably need to take the unit for repair. The parts cost should be nominal, however labor could cost a bit.
Find out is SAME distortion is present in the headphone output. The circuitry shows a bunch of muting transistors and one of them could be bad... but we can do some troubleshooting externally with testing at headphone jack, etc.

Oct 14, 2010 | Pioneer DJm 400 Professional DJ Mixer

1 Answer

I have a problem with my djm 400 pro mixer i can only get very low destorted sound with no leves on the meter and theres is a large hum in the back ground


This sounds like a failing power supply... Probably an electrolytic filter capacitor. Not an expensive part, just have to find someone to troubleshoot and replace defective part.

Dec 17, 2009 | Pioneer DJm 400 Professional DJ Mixer

1 Answer

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To keep your levels down keep the TRIM don which is the gray knob. Also keep the hi, mid, and low knobs at the medium level. The control cables are for using the fader start function.

Jun 02, 2009 | Pioneer DJm 400 Professional DJ Mixer

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Use the stereo master outs from the DJM into the A and B Inputs of the EQ (you'll need 2 phono to Jack or 2 phono to XLR cables) then from the A and B Outputs of the EQ to the power amp/ speakers, etc (you'll need jack or XLR cables depending on what is powereing your speakers)

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Pioneer DJM-400 mixer turns on, but channels aren't working


could be a few things , what have you tried to trouble shoot the problem ?
My steps would be ;
check all leads (even if you KNOW u pluged them in)
check the gain is set corectly .
check the line phono slectors are set to what ever you have you leads pluged into on the back of the mixer ( there is 4 red and white RCA plugs , 2 for phono,2 for line CDJs shold be using line )
if you are using digital cables to conect your CDJs , on the back on the mixer there is a small switch marked "CD or digital" make sure that is sleceted "digital " . if ur not using digital cables make sure it is on "CD" .
the info iv put here is based on the DJM-800 so your mixer my not have some of these featers as iv never used a 400 . hope this helps dued . check out www.djtutor.com for more tricks and tips . Pratices'N'enjoy !

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