Samsung LED TV Resets (Power Cycles) or Has No Power Models: PNxxF4500, PNxxF4550, PNxx4900, PNxx5300

The TV power cycles or does not turn on. The Standby LED may be blinking.
Models: PNxxF4500, PNxxF4550, PNxx4900, PNxx5300


Cause: Voltage regulator IC failure on the Main Board.

Symptom 1: The set has no power or continuously power cycles and was manufactured before March.

Solution: Replace the main board.


Note 1: The production month is the 9th digit of the serial number. Please refer to the table below.
Note 2: The bad IC is indicated by lot numbers 1247, 1248, 1249, and 1250.

Symptom 2: The set intermittently power cycles and was manufactured in or after March.


Solution: Update the software to version 1015.0 or higher.

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