LG SPP8-W Service Manual

5-4
Copyright © 2021 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
ONE POINT REPAIR GUIDE
1. How to Duplicate Problem
Wireless rear speaker doesn’t output a sound.
1-1. Solution
Replace SMPS board (No PVDD).
1-2. How to troubleshoot (Countermeasure)
Check LED color of RX BOX.
Try to remate or reset.
Color is yellow? Replace SMPS board.
YES
NO
2. How to Duplicate Problem
Wireless rear speaker doesn’t output a sound.
2-1. Solution
Replace AMP board (No 12 V).
2-2. How to troubleshoot (Countermeasure)
2-3. Service hint (Any picture / Remark)
RIC307
RIC307
RIC307
< AMP board top view >
NO
Replace AMP board.Check Module or connection.
YES
Replace SMPS board.
5 VA
(RIC307 pin2)
no input.
PWM 12 V
(RIC307 pin3)
no output.
YES
NO

LG SPP8-W Specifications

General

Brand	LG
Model	SPP8-W
Category	Speaker System
Language	English