LG 55EC9300 Repair Manual page 95

Standard Repair Process
LCD TV
Identify
nose
type
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Only for training and service purposes
Error
symptom
Circuit noise, mechanical noise
Check
Circuit
location of
noise
noise
Mechanical Check location of
noise noise
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree apply the process by stage agree, apply the process by stage.
※ Describe the basis of the description
in "Part related to nose" in the Owner's
Manual.
E. Noise
Replace PSU
※ When the nose is severe, replace the module ※ When the nose is severe replace the module
(For models with fix information, upgrade the
S/W or provide the description)
OR
※ If there is a "Tak Tak" noise from the
cabinet, refer to the KMS fix information and
then proceed as shown in the solution manual
OR
(For models without any fix information,
provide the description)
15
Established
2013.01.31
date
Revised date 15/16
LGE Internal Use Only