Acer H243H service manual Bad Screen

Page 45

Acer	Acer –LCD-H243H

Bad Screen

Check LVDS

cable

NG

Change LVDS

cable

NG

Check Crystal:

Pin 25,26 of U104

NG

Change X101, C156,

C157

4.4Bad Screen

OK	Workmanship

OK		LVDS cable NG
		LVDS cable NG

OK		Check the pins
OK		of U104
		of U104

43

Image 45

Contents LCD Monitor Acer H243H Table of Contents Important Safety Notice Main Features Operation SpecificationsAccessories GeneralSafety, EMC, Ergonomics and Compatibility Requirements Electrical and Optical Characteristics and PerformanceMain Power Supply Electrostatic Discharge RequirementsBrightness output White balanceBrightness uniformity Video signals Input / Output Signal SpecificationsSignal Timing Timing requirementsFunction Specifications 1Panel general specifications1DDC data Control KEY Keys Function Keypad Function4OSD Structure First Second Third Fourth Control Range Default ValueSOP of firmware upgrade Manufacturer of Scaler is Mstar Operational conditionOperational steps One port of ISP program card is connected to PC print port Adjust ISP programmingAcer Flowing chart Flat Panel Specification Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Acer Exploded Diagram Page Troubleshooting No raster Black screen Bad Screen White screen Spare parts List PI BD Layout Schematics and LayoutsSwitching Mode Power Supply circuit Assembly and Disassembly Assembly and Disassembly continue Assembly and Disassembly continue Assembly and Disassembly continue Assembly and Disassembly continue Assembly and Disassembly continue