LG Electronics 32LT380H-ZA, 32LT380C C. Audio error, Lcd Tv, Check audio B+ Voltage 20V or

Standard Repair Process

	Error	C. Audio error	Established
LCD TV			date
	symptom	Wrecked audio/ discontinuation/noise	Revised date	9/13

→abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio

☞A25

Check input signal -RF

-External Input signal

Signal normal?

N

Y

(When RF signal is not received)

Wrecked audio/	Check and replace
Discontinuation/
	speaker and
Noise for
	connector
all audio

Wrecked audio/ Discontinuation/

Noise only Replace Main B/D for D-TV

Wrecked audio/ Discontinuation/ Noise only

for Analog

Check audio

B+ Voltage (20V or 24V)

Y

Normal

voltage?

N

Replace Power B/D

Request repair to external cable/ANT provider

(In case of External Input signal error) Check and fix external device

Wrecked audio/ Discontinuation/ Noise only

for External Input

Connect and check other external device

Normal audio?

Y

Replace Main B/D End

N

Check and fix external device

9

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