LG 86UH9500 Service Manual page 115

Standard Repair Process
Error
symptom
Identify
noise type
Mechanical
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description
in "Part related to nose" in the Owner's
Manual.
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Only for training and service purposes
Circuit noise, mechanical noise
Check
Circuit
location of
noise
noise
Check location of
noise noise
E. Noise
Replace PSU
※ 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
(For models without any fix information,
provide the description)
15
Established
date
Revised date
14/15
LGE Internal Use Only