You can troubleshoot the Bluetooth Module by measuring the voltages at the connector pins on the Bluetooth Module.
- With the TV in Standby, measure Pins 2/3/8 and verify that the DC voltages are correct. If the voltages are missing or not correct, check the cabling and supply feed from the Main Board.
- Turn on the TV, measure Pins 2/3/8, and also Pin 1 for correct DC Supply voltages. If the voltages are missing or not correct, check the cable and supply feed from the Main Board.
- Now measure Pins 4 and 5 which are the Bluetooth Signals. If the voltages for Pins 4 and 5 are missing or not correct in the Power On state, the problem is likely the Bluetooth module.
|Pin 1||0 VDC||3.3 VDC||DC|
|Pin 2||3.3 VDC||3.3 VDC||DC|
|Pin 3||5.3 VDC||5.3 VDC||DC|
|Pin 4||0 V||1.1VDC *||BT (2.4Ghz) Signal|
|Pin 5||0 V||2.0 VDC *||BT (2.4Ghz) Signal|
|Pin 6||0 V||0 V||N/A|
|Pin 7||0 V||0 V||N/A|
|Pin 8||2.0VDC||3.1 VDC||DC|
The Actual “Bluetooth Signal”. The effective DC volt readings are in the
table above for Pins 4 and 5.