Troubleshooting
Samsung Electronics
4-1
4. Troubleshooting
4-1 No Raster and No Sound
Measure the B+
Voltage at the Cathode
of D812 (D811)
No Raster and No Sound
Normal
Less than 50V
More than 130V
Check/Replace
IC801 Q801
Check the horiz
output signal at TR
collector.
Measure the B+
voltage at the cathode
of D812*
No Voltage
More than 130V
Normal
Normal
Check/Replace F801
Abnormal
Check/Replace AVR
Circuit, Horiz Output
Circuit and B+
Voltage Line.
Check +12.5 Line
Check/Replace FS
circuit
Check/Replace
AVR circuit
(ADJ Pin of STR)
Check/Replace
the AVR circuit.
Open
Check/Replace
1) D801
2) Short the
Degaussing Coil
3) C801
Check/Replace
the power switch
Normal
Summary of Contents for CT566BVX/STR
Page 54: ...7 2 Samsung Electronics MEMO ...
Page 56: ...PCB Layout 8 2 Samsung Electronics 8 2 PWB CRT V M 8 3 ASSY PCB F AV 8 4 ASSY PCB A V SIDE ...
Page 60: ...Schematic Diagrams Samsung Electronics 10 3 TP16 TP17 TP18 10 3 MAIN 3 4 TP16 TP18 TP17 ...
Page 61: ...Schematic Diagrams 10 4 Samsung Electronics 10 4 MAIN 4 4 ...
Page 65: ...Schematic Diagrams 10 8 Samsung Electronics 10 8 CT766DW MAIN 4 4 ...
Page 66: ...ELECTRONICS Samsung Electronics Co Ltd MAR 1998 Printed in Korea 3KCT57A 6602 ...