Table of Contents
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4. Troubleshooting
4.1.5. Faults and Corrective Actions
Symptom
A blank vertical cell (block)
appears on the screen.
A green screen appears when
the TV is turned on.
The OSD box appears but there
is no text.
A blank upper (or lower) block
appears on the screen.
Either the main or sub picture
does not appear.
Related Image
Causes and Countermeasures
Address buffer defect
•
Replace the corresponding upper/lower
•
buffers.
COF defect (burnt)
•
•
Replace the module.
•
The Scale is not resecting.
•
Replace the Main board.
Incorrect program version.
•
Check the version of each program.
•
•
Replace the Main board.
Upper/Lower Y Buffer defect
•
•
Replace the corresponding upper/
lower buffers.
Replace the Main board.
•
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Table of Contents
Troubleshooting
