LG Flatron L1753 - DPM Troubleshooting

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4. TROUBLE IN DPM
TROUBLE IN DPM
NO
NO
TROUBLE IN U101
CHECK PC
PC IS NOT GOING
INTO DPM OFF MODE
CHECK H/V SYNC LINE
CHECK
R718, R719
CHECK
U501 PIN 32,33
SYNC PULSE ?
3
3
Waveforms
R332 H-Sync
3
R333 V-Sync
YES
YES