26LX2D-UA (CHASSIS:AL-04DA) - LG TV Service Manual (repair manual). Page 13

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Replace D_board 
Replace A_board 
Standby 
voltage check :
D_board P1401 5th 6V
Check No power 
(Go to No power)
Check No power 
(Go to No power)
FAIL
FAIL
PASS
PASS
PASS
PASS
PASS
Measure 
Standby voltage  :
A_board P804 7th 6V
Measure 
Standby voltage  :
A_board P801 
2
nd
pin 5V
Measure 
module T-con voltage :
D_board C933 12V
Measure 
D_board supply voltage :
P1402 1th pin 3V
8th 6V, 10th 12V
Measure 
Analog supply :
A_board P804 7th 6V,
10,11th 3.3V
Check No power 
(Go to No power)
FAIL
FAIL
Replace D_board 
FAIL
Replace A_board 
FAIL
PASS
Replace A_board 
PASS
Replace D_board 
PASS
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