Acer AT4220A AT4220A Service Guide - Page 58

Symptoms Can Not Power on A Power code Plug in? no Check Power code LED Bright? no Replace Power board or Main board Or IO board or All cable / LED Bright Green color ? no LCD Panel no can Display ? END Check Remote control OK and keypad ? NG Replacement Remote control or IR board or Keypad board Check panel's all cable no Check M/B Replacement M/B Replacement Panel Replacement Cable Replacement M/B 51 Chapter 3