Chosen Solution
hi there everyone. I’ve had a pair of Jabra Rox Bluetooth earbuds for a while now and recently I’ve come across an issue which many people have run into. they just won’t turn on! so without being plugged into anything, the earbuds don’t turn on at all. when you plug it into a wall/ computer the LED on the earbuds turn red (charging indicator) for 1 second for it then to turn green (fully charged indicator). while the jabras are plugged into my pc I hold down the turn on button for a few seconds. my pc then makes a ding noise indicating that the pc detects the earbuds. but from that still, nothing happens. any ideas about my situation? I would love to hear them. thanks in advance ~Finn
Jabra Rox Earbuds ^^
Hi I was in the exact same situation with my pair and since they were already past the warranty period I decided that I had nothing to lose and simply disassembled them. As I was expecting it turned out that the reason for this behavior was the battery (actually there are two 3.7V VARTA CP1254 batteries in parallel) but not because it was dead but simply because it was depleted bellow the threshold that the charging circuit will allow you to charge it. If you are familiar with li-ion batteries this is a common situation when you leave them not charged for a very long time and the phantom drain or simply the time passed depletes them bellow the threshold. The way to “revive” such a battery is to jump start it from another battery - no need to be the same one - simply anything with the same voltage and equal or higher capacity will do. In my case I used a random IMR 18350 that I had laying around from my Zhiyun gimbal. Giving it a couple of touches for a 5-6 seconds each raised the voltage from the 0.67V dead state to the reasonable 2.8V state. After this I simply plugged in my USB charger and instead of going to green in a second as they did before they kept on charging for a couple of hours and only then turned on the green light. Then I turned them on to check if they were working and surprise - all is fine. I’ve been listening to them for more than an hour now and the battery is still at 90% in my Android phone Bluetooth settings and the headphones themselves say “Battery full”.
i just purchased a refurbished pair of jabra rox earbuds from BuyDig. same problem. BuyDig kindly replaced the defective set. however, the replacement set had the same problem, namely charging lights (red to green) go on but nothing happens when pressing the multi-function button. i tried different usb charging sites. nothing. i noticed this post on facebook and it seems this may be a rather common issue with these phones: https://www.facebook.com/jabra/posts/101…
https://www.youtube.com/watch?v=CcGA6QCB… check this out
I did follow what’s being written above. It works now, but the battery life is not as it should be. After maybe 30 minutes 9f use it says recharge it plz. And ONE more thing! After disassembling and reassembling the right side bud had no voice at all, after few times of opening and closing the the right side’s case, it produces a lowered volume voice. What’s happened to it? Any tricks or ideas? Regards
