APPLICABLE TO: SAMSUNG LA-32A550P1R _ LA-37A550P1R _ LA-40A550P1R _ LA-46A550P1R _ LA-40A650A1R _ LA-46A650A1R _ LA-52A650A1R
TROUBLESHOOTING
- Check the various cable connections first.
- Check to see whether there is a disconnected or damaged cable.
- Check to see if the cables are connected properly.
- Check the power input to the main board.
- Check internal pattern [FBE3] if there is some picture noise. [(FBE3): Factory mode {Mute => 1 => 8 => 2 => Power On => FBE3 => Pattern sel => Press Right Button on remote control}
Symptom: [1] The LEDs on the front panel do not work when connecting the power cord. [2] The SMPS | IP board relay does not work when connecting the power cord. [3] The unit appears to be dead.
Major checkpoints: The SMPS | IP board relay of the LEDs on the front panel does not work when connecting the power cord, if the cables are improperly connected or the main board or SMPS is not functioning. # Check the internal cable connection status insde the unit. # Check the fuses of each part. # Check the output voltage of SMPS. # Replace the main board.
Symptom: Audio is normal, but no picture is displayed.
Major checkpoints: # Check the PC source. # Check the MT8226. This may happen when the LDVS cable connecting the main board and the panel is disconnected or connected properly. # Check the HDMI source. # Check the tuner CVBS source. # Check the video CVBS source. # Check the S-Video source. # Check the component source.
Symptom: Video is normal but there is no sound.
Major check points: When the speaker connectors are disconnected or damaged. # When sound processing part of the main board is not functioning. # Speaker defect.
Factory service mode adjustments will continue by next post
