Samsung PLK405WX/XAC Service Manual page 39

Troubleshooting
6-5 No AP2 (+30V)
6-6 AP2 (+40V)
6-4
Check the voltage
output to D817
No
Check F802
No
Check
the voltage output from
T801 pin 18
No
Check/Replace T801
Check the voltage
output to D820
No
Check the fusible
resistance of R831
No
Check
the voltage output from
T801 pin13
No
Check/Replace T801
Yes
Check/Replace
L809, D817
Yes
Replace F802
(AC250V/3.0A)
Yes
Check/Replace
L806
Yes
Check/Replace
L810, D820
Yes
Check/Replace
R831 (1/2W 3.3Ω)
Yes
Check/Replace R831
(1/2W 3.3Ω)
Samsung Electronics