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View Full Version : DJM400 Headphone Jack Replacement



CharlieSpriggs
02-15-2012, 10:23 AM
So I show up to a gig Saturday night everything is going good. Then BAM it happened. No sound coming from headphones, I knew it wasn't the headphones because they where new and I had been using them seconds before then. I got to looking at my mixer and the phone jack was loose I started moving the jack around to catch any kind of sound and heard the short on the wires going in and out. Looking in to it further the headphone jack is messed up. This mixer is about two years old and hasn't failed me yet until now, Luckily I had a buddy down the road who had a spare mixer he brought me and that saved the night.

Anyways has anyone ever replaces that jack on the DJM400 I already have the mixer apart and its still connected and I found the service manual online but it doesn't exactly tell you how to change it.

Anyone have any advice? Please and thank you!!

DTR
02-15-2012, 12:20 PM
Can you open it up again a post a photo of the jack? If you can desolder then the hard bit will be finding a like-for-like replacement. It's probably just be a straight swap.

nikoo
02-15-2012, 12:51 PM
in to follow this thread. i have a djm 400 and i was mixing last nite and having the same problem.

headphone jack need some love. i blame it on the long cord that came with my sennheisers.

i havent pulled mine apart yet, i was hoping it was just a solder joint that broke loose that i could resolder..

CharlieSpriggs
02-15-2012, 01:06 PM
Yeah for sure, I'll post some pictures. I still have it apart I gotta order that part for it. They may even have it at radio shack. Like I said I have the service manual for it I just haven't dived into to much. I will do it tonight for sure once I get home from work

CharlieSpriggs
02-15-2012, 03:58 PM
And while I'm repairing it I will document it if you guys with pictures just in case some one else needs it.

Does anyone know a good site to get customer djm400 knows and faders? I had one a while back but I lost it

nikoo
02-16-2012, 07:28 PM
sweet thank charlie i will need to do this as well soon.

got a link to that service manual for the djm 400?

thanks

CharlieSpriggs
02-17-2012, 12:19 PM
Here you go sir just for you http://www.scribd.com/doc/55907053/Pioneer-DJM-400-Service-Manual

Daniel S
02-17-2012, 12:43 PM
Sometimes on Pioneer mixers, the jack just comes lose from the circuit board that it's soldered to. Then you just have to solder it back again. A properly designed mixer has a headphone jack that's screwed to the front plate and doesn't wiggle lose by usage.

CharlieSpriggs
02-17-2012, 02:36 PM
Yeah it was screwed onto the case, but over time I think it just came loose.

dJRootz
02-17-2012, 04:59 PM
Yeah I have the same issue where my jack works, but comes unscrewed over time and wiggles. I ended up putting some of that white cloth electrical tape on the jack and screwing the nut over it for temporary relief, but alas its loose again.:mad:

Unknown DJ
02-17-2012, 07:25 PM
Yeah I have the same issue where my jack works, but comes unscrewed over time and wiggles. I ended up putting some of that white cloth electrical tape on the jack and screwing the nut over it for temporary relief, but alas its loose again.:mad:

Maybe try some locktite?

http://www.loctiteproducts.com/

dJRootz
02-17-2012, 07:57 PM
Maybe try some locktite?

http://www.loctiteproducts.com/

Might have to try that....

DTR
02-18-2012, 12:22 PM
Just bear in mind that locktite is pretty permanent. Personally I'd just nip it up every now and then with a spanner

CharlieSpriggs
02-18-2012, 12:44 PM
Lol trusted on race cars and coffee cups! So its edible? Yum

Guys I promise I'm coming back with the pictures for this I just haven't gotten to take a look at this mixer since I took it apart. Sunday night I will be looking into it more.

CharlieSpriggs
02-25-2012, 05:52 PM
Alright guys I got good news and bad news. Good news is my mixer is fixed. Bad news is when I took it a part and started testing it it was working...and I couldn't recreate the busted sound I was getting from it? Oh well. But I did take some pictures while doing it for you guys to check out.
http://img834.imageshack.us/img834/6443/photo1ql.jpg (http://imageshack.us/photo/my-images/834/photo1ql.jpg/)
http://img703.imageshack.us/img703/9337/photo5jp.jpg (http://imageshack.us/photo/my-images/703/photo5jp.jpg/)
http://img834.imageshack.us/img834/5978/photo4lhu.jpg (http://imageshack.us/photo/my-images/834/photo4lhu.jpg/)

If it ain't broke don't fix it right? Maybe next time