Samsung PLK405WX/XAC Service Manual page 40

6-7 No AP2 (+12V) or No AP3 (+12V)
6-8 No AP2 (+8V) or No AP3 (+8V)
Samsung Electronics
Check the voltage
output to D821
No
Check
the voltage output
from T801 pin12
No
Check/Replace T801
Check
the voltage output
to D819
No
Check F803
No
Check
the voltage output
from T801 pin14
No
Check/Replace T801
Yes
Check/Replace
L812, D821
Yes
Check/Replace
L811
Yes
Check/Replace
L809, D819
Yes
Replace F803
(AC250V/3.0A)
Yes
Check/Replace
L808
Troubleshooting
6-5