22” LCD Color Monitor Adelpia TGL2240A
36
2.) No Backlight
Check if the input voltage of inverter part is 16V
NG
OK
Check adapter part
Check ON/OFF signal
Check Interface board or main board
O
Check U801 PIN12=16V
NG
OK
Check ON/OFF
Check U801 PIN5 have triangle wave
NG
OK
Change U801
Check IC801 PIN9/PIN10 PWM wave
NG
OK
Check U801
Check Q804, Q809 Drain wave
NG
Check the output of T801, T802
Check Q805/ Q806/ Q810/Q811
Check connecter & lamp, feedback and protect circuit
OK
NG
Change T801, T802
OK
Содержание TGL2240A
Страница 4: ...22 LCD Color Monitor Adelpia TGL2240A 4 1 Monitor Specifications ...
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Страница 20: ...22 LCD Color Monitor Adelpia TGL2240A 20 6 Schematic 6 1 Main Board ...
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Страница 24: ...22 LCD Color Monitor Adelpia TGL2240A 24 6 2 Power Board ...
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Страница 27: ...22 LCD Color Monitor Adelpia TGL2240A 27 7 PCB Layout 7 1 Main Board ...
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Страница 29: ...22 LCD Color Monitor Adelpia TGL2240A 29 7 2 Power Board ...
Страница 30: ...22 LCD Color Monitor Adelpia TGL2240A 30 7 3 Key board ...
Страница 40: ...22 LCD Color Monitor Adelpia TGL2240A 40 10 Monitor Exploded View ...