I have owned a pair of MDR-ZX770BN headphones for the past 6 months. Everything worked fine, until last week, when the headphones failed to work via bluetooth.
When I turn on the headphones, they automatically connect to my computer via bluetooth (MacBook Pro 2017), and then disconnect 5 seconds later. The headphones are fully charged, and the computer is the same as before.
I have tried resetting and initializing the headphones, but the problem persists, even after re-pairing them.