LG SN4A - Page 40

3-11
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ONE POINT REPAIR GUIDE
NO SOUND
2-3. HDMI
2-3-1. Solution
Replace MAIN board.
2-3-2. How to troubleshoot (Countermeasure)
1) Please check soldering status of HDMI jack and check HDMI_5V at IC308 pin1.
2) If soldering status and 5.1 VA are abnormal, replace MAIN board.
2-3-3. Service hint (Any picture / Remark)
< MAIN board top view >
C360
1nF
C361
10uF
C363
1uF
C362
10uF
C359
1uF
C358
10uF
C399
100nF
(1)
NC
HDMI_CTRL
R369
NC
R383
4.7K
5.1VA
HDMI_5.1VA
DGND DGNDDGND
IC308
1
OUT
2
GND
3
OCB
4
EN/ENB
5
IN
[5.1VA to HDMI_5.1VA]
IC308
IC308