How to Troubleshoot the 2012 TV Bluetooth Module

You can troubleshoot the Bluetooth Module by measuring the voltages at the connector pins on the Bluetooth Module.

  1. 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.
  2. 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.
  3. 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.

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