Samsung CL29A551GQ9XZD - No Picture

Troubleshooting
Samsung Electronics 4-9
3. No Picture
- when the power is normall
Checkthe+125Vline
Complete
Yes
“D811”(D811A)
open and check
T444B+Pin#3
Open and check
CHECKCRTASS`Y
No picture (1st power OK)
CheckD407
Yes Yes
No
Change the “D811” (D811A)
Checkthe“Q401”
No
No
ChecktheothersB+line
Yes
Changethe“Q401”
ChangeD407
No
No
Yes
D811MAINTRANS FBT
D407 OUTPUT
TRQ401