TV POWER ON SEQUENCE
Power TV On.1.
PS_ON 9 . 2Vdc (when off) changes to 3.3Vdc (on)
May already be On if IoT USB is loaded or TV Smart Things Hub mode is active. -
if voltage error or no change.2.
Jog Function Control Test. 9
If OK replace Main Board.3.
All 9 A13V supplies to full voltage level 12.7VDC.
see (SMPS label for approx. STBY and On voltage) 9
If any wrong voltage, remove the SMPS connector to Main Board.4.
A13V 9 again for 12.7VDC.
If OK replace Main Board.5.
If still wrong voltage replace SMPS.6.
OD 9 (Over Voltage Detect) : 3.3Vdc (Operating Normal)
If 0V or changing, an SMPS or Panel error exists.7.
Perform Backlight Test.8.
Backlight On/Off 9 0V Off to 5Vdc ON.
If missing/error replace 9 Main Board.
[Backlight On/Off]
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