LG 43UR8000PSA Service Manual page 79

Appendix. Checkpoints for module-related defects for UHD T-con less models (No screen / Sound Ok)_UR80
 Checkpoints for the power supplied from Main B/D to Module
- The voltage of the 5 points may be different for each module, but it must be within the voltage range as shown in the table below.
- If there is no power when it's connected to the Module, remove the cable connected to the Module and check.
(If the module is defective, the power may be lost because of the Module, not because of the Main B/D)
LS-VGL
VCC1.8
VGH1
VDD-EPI
Pin Name
VCC1.8
LS-VGL
HVDD
HVDD
VDD-EPI
VGH1
Appendix. 1 / 1
Voltage range Note
1.73V ~ 1.98V
-11V ~ -9V
VDD-EPI / 2
HVDD uses half the voltage of VDD-EPI
(7.7V~8.1V)
16.2V ~ 16.8V
32V ~ 36V
Copyright © 2023 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.