5 Troubleshooting
PG17N*/PG19N*
5-9
5-1-16 No Video
IC101 Pins 2, 6 and 11 (17”:
IC104, Pin 5, 8, 10) inputs are
right?
IC101 Pins 29, 32 and 35
(17”: IC104, Pin 25, 28, 30)
outputs are right?
Check I
2
C bus and +12 V line.
Yes
Yes
No
Check CN101 and BNC B’D IC1.
No
IC102 Pins 4, 6 and 14 (17”:
IC105, Pin 1, 3, 5) outputs are
right?
Check +12 V line.
Check and replace IC102 (17”: IC105).
Yes
No
Cathode DC levels are right?
Check +80 V line.
Check and replace IC101 and IC104
(17”: IC104).
Yes
No
G2 voltage is right?
Check G2 wire, CRT Socket board,
and FBT.
Change CRT.
Yes
Done.
No
Check signal cable and connection.
22
26
23
22
1.08 V (IC101, #2)
CH1 P-P = 1.08 V
CH1 RMS = 2.930 V
23
3.52 V (IC101, #35)
CH1 P-P = 3.52 V
CH1 RMS = 3.204 V
26
46.4 V (IC102, #6)
CH1 P-P = 46.4 V
CH1 RMS = 47.84 V
Summary of Contents for PG19N
Page 2: ...Samsung Electronics Co Ltd April 2000 Printed in Korea P N BH68 00129F 01...
Page 17: ...Memo 4 Alignment and Adjustments 4 8 PG17N PG19N...
Page 67: ...Memo 8 Block Diagrams 8 2 PG17N PG19N...
Page 71: ...10 Schematic Diagrams 10 3 PG17N PG19N 10 2 Micom Part Schematic Diagram 4 6 3 5...
Page 73: ...10 Schematic Diagrams 10 5 PG17N PG19N 10 3 H V Process Part Schematic Diagram 9 11 10 7 8...
Page 77: ...10 Schematic Diagrams 10 9 PG17N PG19N 18 21 20 19 10 5 HIGH VOLTAGE Parts Schematic Diagram...
Page 79: ...10 Schematic Diagrams 10 11 PG17N PG19N 10 6 Video Parts Schematic Diagram 17...