If your Avantree Aria Pro or any other headphones got hanged during switch-off, i.e.:
- They still light LED though turned off
- Turning then on and off brings no effect
Then the best solution I figured out was to… charge them up to maximum. Simple like that!
The described situation may look like that:
(notice power knob at Off position, but LED still flashing)
In case of my Aria Pro headphones, I simply attached them to USB power source and let them charge them to maximum. Some time later, I noticed that LED diode is gone and upon switching on turned out that headphones are back to normal.