Missing Color - Samsung SyncMaster 1000s Service Manual

7 Troubleshooting

7-2-3 Missing Color

Are proper Video levels
on CN D-sub pins 1, 2 and 3, CNR,
CNG and CNB.
Yes
Are proper AC voltage present
on all cathodes?
Yes
Are proper DC voltage present
on all cathodes?
Yes
Is the G2 voltage correct?
Yes
Change the CRT.
Done
7-16
No
Check signal generator and cable.
No
Refer to 7-1-16 No Video.
Check IC107 Pins 10, 11 and 12,
No
IC104 Pins 24, 25 and 26.
Check QR104, QR105, QG104,
QG105, QB104 and QB105.
No
Check G2 wire, control G2 volume of
FBT.
SyncMaster 1000s (CGP1607L)