LG 49SK8000PUA Service Manual page 91

`17Y OLED(B7/C7/E7/G7) Power Board Diagnostic method
1
▶ Disconnect the Main Board 28Pin Power Cable connector.
3
▶ Switch the LCD MODEL S/W to
the power voltage.
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
20V by checking
2
▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.