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Hisense 50E77HQ - User Manual

Hisense 50E77HQ
38 pages
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LCD Television
Service Manual
Chassis MT9900
Version: V 1.0
Hisense Visual Technology Co.Ltd.
November 19, 2021
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Hisense 50E77HQ Specifications

General IconGeneral
Screen Size50 inches
Resolution3840 x 2160 (4K UHD)
Display TechnologyLCD
Smart TVYes
HDMI Ports3
USB Ports2
Refresh Rate60 Hz
Audio TechnologyDTS Virtual:X
Wi-FiYes
BluetoothYes
Sound Output20W
HDR SupportHDR10, HLG

Summary

Safety Precautions and Notices

Warning Statements

Covers critical components, ESD, power cord safety, voltage limits, and unauthorized modifications.

Safe Handling Procedures

Details safe LCD panel handling, servicing procedures, working space, and power disconnection.

TV Board Identification

Main Board Layout Details

Provides top and rear views of the main board with component identification.

TV Board Part List

Lists main boards, their function differences, and chassis/series types.

Factory and Service OSD Menu

Remote Control Button Functions

Explains the functions of various buttons on the TV remote control.

Factory OSD Menu Parameters

Outlines the factory OSD menu structure including version, MAC address, and key information.

Software and Firmware Updates

USB Software Upgrade Process

Step-by-step instructions for upgrading TV software via USB in user and factory modes.

Flash Tool Firmware Upgrade

Details using a flash tool for firmware upgrades, including serial port setup.

Troubleshooting Common Issues

Remote Control Problems

Flowchart for diagnosing and resolving remote control issues.

TV Power On Failures

Diagnostic flowchart for issues where the TV fails to turn on.

Audio Output Problems

Flowchart for diagnosing and resolving no-sound issues.

Video Input Signal Issues

Flowchart for troubleshooting no picture on screen for various video inputs.

Signal Flow and Power Sequences

AC Power-On Sequence Diagram

Illustrates the sequence of power signals during AC power-on.

DC Power-On Sequence Diagram

Illustrates the sequence of power signals during DC power-on.

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