LG FLATRON L1919S - Troubleshooting: DPM Issues

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4. TROUBLE IN DPM
TROUBLE IN DPM
NO
NO
TROUBLE IN U201
CHECK PC
PC IS NOT GOING
INTO DPM OFF MODE
CHECK H/V SYNC LINE
CHECK
R442, R443
CHECK
U201 PIN 27,28
SYNC PULSE ?
3
3
Waveforms
R442 H-Sync
3
R443 V-Sync
YES
YES