POWER LIGHT NOT LIGHTING UP, UNABLE TO CHARGE HEADPHONES

Murdo's tip to trim off the cover of the AA battery base to expose a few mm of metal is spot on. Replacement rechargeable batteries for my Thomson wireless headphones did not charge, no green light, utterly frustrating, till I read Murdho's suggestion. Thanks for that

The battery in the headphones is most likely not taking a charge anymore and will need to be replaced with an equal value rechargeable battery

Had this problem too
just remove the rubber cap where the charger bit is and replace the 2 RECHARGEABLE batteries. If the light is flashing just turn the power off on the headphones. :)

I have the same problem. Blue led but unable to turn on my brand new backbeat 903+

I have the MDR-RF970R but I bet the battery is the same. If you have had the headphone for seceral years then I bet you are right, the battery is going. You might try using them till the battery dies and then recharge. This is called deep cycle and may time it will extend the life of rechargables.

If the headphones are new, then just check and make sure that they going all the way into the charge slot.

I will say it is not common for me to see the light off, but I use the headphones all the time.

Good luck.

Try to press the power boton in the same time you plug the charger, after this action mine is working and charging perfectly, maybe this is the "reset" solution... Hope this helps you.

SImply connect the headphones to a power source. Then press up and down volume buttons at the same time. It will reset the headphones.