LG Flatron L1753S Service Manual page 23
Color monitor
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Also See for Flatron L1753S:
- User manual (26 pages) ,
- Brochure (34 pages) ,
- Service manual (32 pages)
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NO Raster
(Lamp Off)
CHECK
P201 Pin9
3.3V?
YES
Check U301 Pin3
5V?
YES
Check U301 Pin2 OVP,
Less than 1.8V
YES
Check U301 Pin10 CMP,
Less than 2.75V
Check U303, U304
Drain waveform
YES
CHECK T301, T302
6. Raster
NO
NO
NO
NO
If waveform is no problem
NO
- 23 -
Check Scaler Output
(Main Board)
Check Q301, Q302
Check the waveform of U301
Pin11, 12, 19, 20
Check the waveform of U301
Pin11, 12, 19, 20
Check Q303~Q308
Or Trouble in U303, U304
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