LG Electronics 32LM640S/640T-ZA service manual Check RF Signal level, Check S/W Version

Standard Repair Process

	Error	A. Picture Problem (DVB-S/S2)	Established	2011. 01 .24
LCD TV			date
	symptom	Tuning fail, Picture broken/ Freezing	Revised date		3/13

☞ A6	Check RF signal cable (DVB satellite signal or not)
	Check whether other equipments have problem or not.
Check RF Signal level
	(By connecting RF Cable at other equipment)
	→ Set-Top-Box, Different maker TV etc

Normal Y Signal?

N

Check satellite setting.

-Check LNB frequency.

-Check satellite

-Check Satellite connection (DiSEqC, motor, etc…)

Normal Y setting?

N

☞A7

Check

S/W Version

SVC N

Bulletin?

Y

S/W Upgrade

Check

Tuner soldering

Replace

Main B/D

Contact with
	Change satellite setting
signal distributor
	(match with installed ANT)
or broadcaster
(Cable or Air)
	Normal	N
	Picture?

Close

Y

Normal Picture?

Y

Close

N

Close

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