LG S90QY - Page 44

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Only for training and service purposes.
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 IC3008 pin6.
2) If soldering status and HDMI_5 V are abnormal, replace MAIN board.
2-3-3. Service hint (Any picture / Remark)
R3045
470
C3064
100nF
/16V
DGND
L3006
220
IC3008
1
IN
2
GND
3
EN 4
OCB
5
ISET
6
OUT
C3039
10uF
/10V
C3043
100nF
/16V
HDMI_5V
DGND
C3051
10uF
/10V
R3036
51K
5.1VA
DGND
C3057
10uF
/10V
HDMI_PCTRL
< MAIN board bottom view >
IC3008
IC3008