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4.4.6 Other errors
● Symptom : No booting / No power
Engine is not warming up and LCD does not display anything on.
● Possible Cause :
1. Power Out
2. Fail to Initialize Video PBA
● Troubleshooting method :
[1. Power Out]
1.1) Check the power cord and power inlet.
1.2) Check whether the LED on video PBA is flickered on.
If the LED is off, go to next step.
1.3) Check and confirm 5V/ 24V output from SMPS.
5V : 1,3,5 Pin
24V : 1,3,5,7 Pin
If there is a defect, replace the SMPS board.
1.4) Check power wire connections from SMPS to Engine PBA.
1.5) Check core voltages in Video/Engine PBA. Replace the Engine PBA.
[2. Fail to Initialize Video PBA]
2.1) Check the connections of DIMM Memory, HDD, and GUI interface harness.
2.2) Reboot the set.
2.3) If the set is not initialized, replace the Video PBA.
Service Manual
Troubleshooting
5V
5V
24V
24V
4-212
Samsung Electronics
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Table of Contents
Troubleshooting
