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Standard Repair Process Detail Technical Manual
Error symptom
symptom
TV
Content
Content
Output
Voltage
12.54V ~ 13.86V
13.2V / 55"
12.54V ~ 13.86V
13.2V / 49"
Checking method without Audio
1.Check the contact condition of or 13.2V connector of Main Board
① Checking voltage 20V of Main Board
② Checking voltage 20V of Power Board
③ Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the
GND and output terminal, the speaker is normal.
Error
C. Audio error_No audio/Normal video
C. Audio error_No audio/Normal video
Voltage and speaker checking method
Voltage and speaker checking method
when there is no audio
when there is no audio
Output
Current
3.8A (0.1~3.6A)
VLED
3.6A (0.1~3.6A)
②
Inch
Voltage
Typycal
65
159.03~194.37 V
176.7V
55
105.84V~129.36V
122.89V
49
117.0V~143.0V
135.85V
A13
Established
date
Revised
date
①
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
A13
A21
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