LG S55A1-D Service Manual

3-9
ONE POINT REPAIR GUIDE
< HDMI & JACK board top view >
< HDMI & JACK board bottom view >
< HDMI & JACK board top view >
8. HDMI PROBLEM
No display or No Sound.
8-1. HDMI jack connection
1) Check the HDMI jack connection correctly each port. (JK801 : HDMI IN, JK800 : HDMI OUT)
8-2. IC803
1) Check 3.3 V at pin1, 4 of IC803 and 1.08 V at L803 nearby pin8 of IC803.
2) If 3.3 V is not output, check 3.3 VA at pin1 of IC802.
3) 1), 2) is OK  Replace HDMI & JACK board.
IC802
IC802
IC803
IC803
L803
L803
JK800
JK800
JK801
JK801

LG S55A1-D Specifications

General

Brand	LG
Model	S55A1-D
Category	Speaker System
Language	English