LG OLED55B7P Service Manual

Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
Check Vx1 lock
voltage
0V
Y
N
Check Power
Board (Main)
20V, 12V etc.
Normal
voltage
Y
N
Replace Main Board
Repair Power
Board or parts
Check Power Board (Module) 24V output
Normal
voltage
Y
Replace module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※Precaution
Established
date
Standard Repair Process
Revised date
1/15
Error
symptom
A. Video error
No video/ Normal audio
☞A9
☞A9
☞A4 & A2
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, Vx1 Cable, Speaker Cable, IR B/D Cable,,,)
1
☞A1

LG OLED55B7P Specifications

General

Screen shape	Flat
Response time	- ms
Display diagonal	54.6 \
Display brightness	- cd/m²
Display technology	OLED
Motion interpolation technology	-
Product color	Silver
Panel mounting interface	300 x 200 mm
PC in (D-Sub)	No
RF ports quantity	1
HDMI ports quantity	4
USB 2.0 ports quantity	3
Consumer Electronics Control (CEC)	SimpLink
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	0
Operating system version	3.5
Operating system installed	Web OS
Audio decoders	DTS, Dolby Atmos, DTS-HD
RMS rated power	40 W
High Dynamic Range (HDR) technology	Hybrid Log-Gamma (HLG)
Wi-Fi standards	Wi-Fi 5 (802.11ac)
AC input voltage	120 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.5 W
Package depth	228.6 mm
Package width	1450 mm
Package height	825.5 mm
Package weight	27000 g

Weight and Dimensions

Depth (with stand)	226 mm
Height (with stand)	760 mm
Weight (with stand)	20500 g
Depth (without stand)	48.3 mm
Width (without stand)	1229.4 mm
Height (without stand)	708.6 mm
Weight (without stand)	16200 g