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LG 55UJ634 Series Service Manual page 90

Chassis ub74p
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`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (2)
5
6
▶ 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.
A 28 (7/19)

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