Acer AT4220A AT4220A Service Guide - Page 59
LCD No Backlight
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Page 59 highlights
LCD No Backlight B Inverter power Cable had Plug in no Change Inverter Power Cable LCD Panel Backlight no Bright ? Replacement Power/B LCD Panel Backlight Bright ? no Replacement LCD Panel Inverter /B LCD Panel Backlight no Replacement Main/B Bight END Chapter 3 52