Read LG 55LM960V (CHASSIS:LD23E) Service Manual online
Checking order when there is no audio
① Check the contact condition of or 24V connector of Main Board
② Measure the 24V input voltage supplied from Power Board
(If there is no input voltage, remove and check the connector)
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.
GND and output terminal, the speaker is normal.
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
when there is no audio
C. Audio error_No audio/Normal video
A25
Established
date
Revised
date
Error
symptom
Content
LCD TV
A25
①
②
③
②
2011. 12 .14
ALEF LED
24 Pin
(Power Board ↔ Main Board)
1
Power on
2
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
3.5V
10
3.5V
11
3.5V
12
3.5V
13
GND
14
GND
15
GND
16
V-sync
17
12V
18 Inverter On/off
19
12V
20
N.C
21
12V
22 PWM Dim #1
23 PWM Dim #2 24
Error-out
<XXLM9600>
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