Medion B1997PNST Service Manual page 23

5-4 R.G.B. Video Amplifier Abnormal
RGB Video AMP Abnormal
Check
the waveform at the I501
pin 29, pin 32, pin 35
Yes
Check
the waveform at the
I901 pin 3, 5, 1
Yes
Video signal present at the
pin of the CRT R.G.B.
Cathode
Yes
Defective cut-off circuit
(DC restore)
Troubleshooting
Check B+
No
(pin17, pin36)
Check B + pin 10, 6
No Yes
MD 1998LE (B1997PNST)
Check the
waveform at pin
Yes Yes
2, 6, 11, 19, 27
Check I901
Check I501
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