Samsung CFTD2085X/SMS Service Manual page 50

5-4 No Raster / No RF Signal
* No Raster
Q810-E Output
Voltage?
Yes
Check H-Drive
(CN003 #8)
Yes
Check Q402,
Q401, D414
Yes
Check
R405, R435
R424, R425
Check the
CRT PCB, IC501,
R513, L501
No
Replace
Samsung Electronics
No
Check Q811-B(0.6~2.0V)
Check IC902 #1
No
Check/Replace
IC902
No
Check/Replace
No
Check/Replace
No
Check/Replace
* No signal
IC902 #1 TV
Power High?
Yes
Q810-E Output
Voltage 8V?
Yes
Tuner B+
5V?
Yes
Tuner 33V
Line Check
Troubleshooting
No
Check/Replace
IC902
No
Replace Q810
No
Tuner 5V
Line Check
5-3