Motherboard Replacement for JBL Tune 770NC Headphones
Professional repair service for JBL Tune 770 nc in New Cairo.
Problem
The headphones were completely not working (no power, no response to charging or buttons), indicating a failure in the mainboard circuit.
Solution
The device was carefully disassembled and diagnosed. The faulty motherboard was identified and replaced with a fully functional original board. All connections were reassembled and tested to ensure proper operation (power, charging, Bluetooth, and sound).
Repair Time
2 -3 hour