Samsung PS43F4100AR - 4.2.1. Example of Trouble Shooting

4.Troubleshooting
4.2.1.ExampleofTroubleShooting
SymptomRelatedImageCausesandCountermeasures
Ablankverticalcell(block)
appearsonthescreen.
•Addressbufferdefect
•Replacethecorrespondingupper/lower
buffers.
•COFdefect(burnt)
•Replacethemodule.
Agreenscreenappearswhen
theTVisturnedon.
•TheScaleisnotresecting.
•ReplacetheMainboard.
TheOSDboxappearsbutthere
isnotext.
•Incorrectprogramversion.
•Checktheversionofeachprogram.
•ReplacetheMainboard.
Ablankupper(orlower)block
appearsonthescreen.
•Upper/LowerYBufferdefect
•Replacethecorrespondingupper/
lowerbuffers.
Eitherthemainorsubpicture
doesnotappear.
•ReplacetheMainboard.
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