On the right side of me JBL headphone doesnt work pulled the cord by accident

You might need to go via the foam side. Often you have to remove the foam and that shows the access screws. You can glue the foam back with Bostick after you have done. Or you can look around for new foam pads.

I have the same set and mine broke on me too. Though mine was the left side. It looks like you've opened up the back piece but you can get to the meat of it if you just push on the pole that ear piece sits under push back on it(don't snap) and use a little upward force on the ear piece. Then you can see where the wire has most likely disconnected.

If it hasn't on that side you can do the same on the other side, it most likely has disconnected from the PCB as the wires are very very thin(what happened to mine). Just use a soldering iron and heat up the solder on the pad and put the wire back on. You need to make sure that the wire is exposed from the insulation first(I could use my nail to pull it off but the right wires looked different).

I attached a picture I took with the PCB exposed. On the left and right you can see the two grey prongs you need to put some pressure on to remove the rocker and get in. On the PCB at the top left you can see the 4 pads the speaker wires connect to. My left speaker was disconnect so you won't see wires on there(red and black). right beside it is the right speaker connection(blue and white wires). those should be attached like in the picture.

Use a soldering iron only if you have experience or with someone who does. I don't take responsibility for burns or fires or any other crazy mishaps. Doing this could break your headphones further, by burning the PCB or snapping the rockers on the side or any number of other things that could go wrong. So only do this if you already don't care if they break further.

Try the company JBL?

here Official JBL Store Speakers Headphones and more JBL

http://therealchart.blogspot.co.uk/p/technical-help-tips.html
Follow the information here.

I need more info to correctly troubleshoot this. However my best guess from what your telling me is that its either the Audio jack on the Korg or the headphones. If everything else is working properly replace the headphones and the Audio outputs. Post again with more details if that does not work

THE INTERNAL WIRE CONNECTING BOTH HEADPHONES IS BROKEN. THIS PROBABLY HAPPENED WHEN TWISTING ONE OF THE HEADPHONES TO HEAR ONLY THROUGH ONE OF THEM. TRY FEEDING EEACH HEADPHONE INDEPENDENTLY WITH ITS OWN CABLE USING ONE OF THOSE PLUGS TO SHARE MUSIC FROM SAME SOURCE.

Your best bet is to call their support line to get a replacement.
1.800.336.4525 9:00am - 6:30pm EST Monday - Friday.
http://www.jbl.com/EN-US/Support/Pages/SupportOverView.aspx

Has broken the copper wire inside the sheath. My email is: doctor.walkman @ gmail.com, tell me the make and model of her headphones and a photo detail. I'll try to help her.

Not really, see the headphone connector if it fits the unit. If it fits but doesnt work then the headphones may have a problem. HOpe this helps and have a good one!

The same happened to me. JBL says that repair services are not available for this product according to their website. Their suggestion is to buy a new pair!!!!!. What a shame. JBL products are quite good but the post service is ****.