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Trouble Diagnosis
7-2.Typical Symptoms of PCBs problem or bad connection
A.Symptom of No image when LED and Back Light are working.
-Define No image : LED and BACK LIGHT of panel are correctly working but
any image does not display.
-Repairing method : This is typical symptom when LVDS cable incorrectly
connects.
So if you find this symptom, check LVDS connection.
-As this method, TV set is not repaired, replace Main or Sub PCB.
B.Representative Symptom caused by bad Connections between PCBs
=>Note : Dust or extraneous material may cause bad connections. Most of
the time, applying soft brush, AIR FRESHIER, or breath to clean
dust or extraneous materials can solve it. And then reassemble
the Connector.
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