Hey first of all I am from Belgium so I apologise for my English. If your speaker turns on when you charge it ,but not when you push the power button if you don't charge it. The only thing you have to do is charge it and if your speaker turns on hold the power button and the volume minus - button simultaneously until it turns off. Than pull out the cable and push the power button. If it doesn't turns on you should repeat the previous steps but instead of pushing the power button and the volume minus button press the power button and the volume plus button until it turns of.
If your JBL Charge 3 speaker is not playing sounds, lighting up, or turning on at all, see the JBL Charge 3 Won’t Turn On problem page for possible problems and solutions. You need to charge your JBL and when the power button turns on you have to press the volume+ and the connect button at the same time until it shuts off. Then you pull the cable out and start it.
Excuse me for my English, I am from Belgium Has anyone tried to reset the extreme? You can reset your extreme by turning it on and press the volume + button and the.play/pause button at the same time for 10 seconds until it shuts of. If anyone has a problem with the fact it won't turn on. And it only turns on when you charge it than youpress the connect button and the volume + button at the same time until it shuts of.