LG Flatron W1943SB - Troubleshooting - Power Issues

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5. POWER
Check U901, T901,D906,D905,ZD903,ZD902,U902,U903
Check U901 pin 6
Vcc is 13v?
Check D902,C911
NO
YES
Check start
voltage for the pin1
of U901
Check D901, R903,
R904,R905,U901
YES
NO
YES
No Power
(Power Indicator Off)
Check AC line
volt
Check the
voltage of C907(+)
Check AC line
Check F901, BD901
NO
YES
NO
Check U901 PIN5
output is PWM?
Check D904,Q901
NO
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