AOC L47H831 Istruzioni per gli Interventi Scaricare il pdf (Pagina 20)

42″&47″ LCD TV AOC L42H831&L47H831

20

3. No display (LED indicator Green )

Check 12V

power supply

Check Panel

NG

Replace Panel

Check back light is OK

OK

Check LVDS cable

and connector

OK

Check U403

NG

Replace U403

OK

Check U401

NG

Replace U401

NG

NG

OK

Check BL-ON/OFF signal

Check PS

signal

OK

OK

Check power

board

NG

NG

NG

Check Q705、Q704

Replace Q705、Q704

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