Acer AL532 AL532 Monitor Service Guide - Page 16
Check the main, board, Check, U9,U11,R43, 3.3V ?, U7,U12, Change, Signal Cable, Display ?, H/V
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Page 16 highlights
No display (White) Check the main NO Check board 5V ? U9,U11,R43 YES +3.3V ? NO Check U7,U12 YES NO Check the main Check board U8/Pin1 ? 3.3V Circuit YES H/V Input Signal ? NO Check H/V Signal YES Change U8 Display ? YES OK ! NO Change Signal Cable