Samsung PS42B451B2WXXU Service Manual page 67

■ Voltage Adjustment
1. After replacing the SMPS or PDP panel, you must adjust the voltage referring to the voltage label printed on the panel.
(If you do not adjust the voltage, an abnormal discharge symptom may appear.)
Vs
Va
Vset
Ve
Vscan
2. A point of adjusting SMPS-MAIN voltage.
Samsung Electronics
Value Board Adjustment
207
54
- SMPS
95
-190
Troubleshooting
4-35