Samsung AQ17KS Service Manual page 29

5-1-16 No Video
Check signal cable and connection.
IC101 Pin 12, 14 and 16 inputs
15
are right?
Yes
IC101 Pin 18, 21 and 24
16
outputs are right?
Yes
IC103 Pin 1, 2 and 3 outputs
17
are right?
Yes
Cathode DC levels are right?
Yes
G2 voltage is right?
Yes
Change CRT.
Done.
AQ17KS
No
Check the signal cable connection.
No
Check I 2 C bus and +12V line.
No
Check +12V, +72 V line.
Check and replace IC103.
Check +72V line.
No
Check and replace QR01, QR02,
QG01, QG02, QB01, and QB02.
No
Check G2 wire, CRT Socket board
and FBT.
5 Troubleshooting
WAVEFORMS
15 1.00V (IC101 #12,14,16)
CH1 P-P = 1.00V CH1 RMS = 2.452V
1.00V (IC101 #18,21,24)
16
CH1 P-P = 1.00V CH1 RMS = 2.792V
17 20.0V (IC103, #1, 2, 3)
CH1 P-P = 20.0V CH1 RMS = 40.52V
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