Acer AL2051 AL2051W Service Guide - Page 38

Inverter Board

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3. Inverter Board No backlight Check L805 =12V OK NG Check ON/OFF signal OK NG Check IC801 PIN5=5V+ -0.25V OK NG Check IC801 PIN18 triangular wave is normal OK NG Check IC801 PIN11, 12,19,20 OK NG End no output debug Check adapter board Check main board Check Q802,Q804,ZD803 circuit Check R821,C821 Check feedback 38

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