Acer AL2051 AL2051W Service Guide - Page 36

White screen White screen Measure Q701 base is high level? OK Check Q701, Q702 is broken or CN407 solder? NG X401 oscillate waveform is normal OK NG Replace X401 Check reset circuit of U402 is normal Check Correspondent component. NG OK Replace Panel NG Check Correspondent component. OK Replace U402 Note: 1. If Replace "MAIN-BOARD", Please re-do "DDC-content" programmed & "WHITE-Balance". 2. If Replace " PWPC" only, Please re-do " WHITE-Balance" 36