LG Electronics 42LT640H-ZA A. Video error, Lcd Tv, ※ Check, and replace, Link Cable, LVDS and

Standard Repair Process

	Error	A. Video error	Established
LCD TV			date
	symptom
		Color error	Revised date	4/13

Check color by input -External Input

-COMPONENT -RGB

Color error?

Y

※ Check

and replace

Link Cable

(LVDS) and

contact

Color error?

Y

Replace Main B/D

Y

Color error?

Replace module

-HDMI/DVI

N

Check error color input mode

condition

N

N

End

Check Test pattern

External Input/

Component

error

Check	External device	Y
external
device and	/Cable
	normal
cable
	N
	Request repair
	for external
	device/cable

Replace Main B/D

		N
		External device Y
RGB/	Check external
HDMI/DVI	device and	/Cable
error	cable	normal

Replace Main B/D

4

Copyright © 2012 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes