ChangePanelStillhavingproblemsNo picture but havesoundCheck if there is +12V atPin35 in CN202NoReplace the QD6YesCheck if there is +43V atPCN4YesNotest if PU5 Pin8˄3.3V˅ǃPin1 normallyChange LVDS wireNoReplace PU5Check if PQ6 ǃPD14ǃPR46works normallyYesReplace PQ6 ǃPD14NoService ManualModel No.:7-2. Main board failure check- 27 -˄   12V˅

ChangePanelStillhavingproblemsNo picture but havesoundCheck if there is +12V atPin35 in CN202NoReplace the QD6YesCheck if there is +43V atPCN4YesNotest if PU5 Pin8˄3.3V˅ǃPin1 normallyChange LVDS wireNoReplace PU5Check if PQ6 ǃPD14ǃPR46works normallyYesReplace PQ6 ǃPD14NoService ManualModel No.:7-2. Main board failure check- 27 -˄   12V˅

General Guidelines

Important Notice

How to Read this Service Manual

1 General Information

Board Location

Main Board

LED Panel

Connector Definition

4 Disassemble and Assemble

5 Installation Instructions

6 Electrical Parts

7 Trouble Shooting

3 Location of Controls and Components

Haier LE39B8550T Service Manual

LE39B8550T