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.
| Stand-by | Power On | Note | |
| 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.