Faults And Corrective Actions - Samsung PS43D450A2W Service Manual

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4. Troubleshooting
4.1.3.

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.
A vertical green line appears
on the screen.
4-8
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Published in Heiloo Holland
Causes and Countermeasures
Address buffer defect
• Replace the corresponding upper/lower buffers.
(E, F or G)
COF defect (burnt)
• Replace the module.
The Scale is not reseting.
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.
The SMPS voltage is incorrect.
• Adjust the SMPS voltage according to the voltage
printed on the module label.
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8/6/2016