LG Electronics 42LT640H-ZA service manual E. Noise, Identify nose type, Lcd Tv

Standard Repair Process

	Error	E. Noise	Established
LCD TV			date
	symptom	Circuit noise, mechanical noise	Revised date	12/13

Identify nose type

Circuit noise

Mechanical noise

Check location of noise

Check location of noise

OR

Replace PSU(with LED driver)

Replace LED driver

※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.

※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
OR	then proceed as shown in the solution manual
	(For models without any fix information,
	provide the description)

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