Acer AL1716 AL1716x Service Guide - Page 35

No raster :&4 LED Green? :&4 Backlight can not be turned on :&4 Is there 12Vdc voltage on pin13 of IC501? :&4 Is there high-level voltage on pin8 of IC501 :&4 Check CN501, CN502, CN503 and CN504? :&4 /0 /0 Is Ok fuse F501? /0 /0 Is R526 Ok? /0 F501 open Check power supply :&4 Check I/F board R526 open Connecting the output connector again /0 Is there pulse waveform on pin1, pin3, pin15 and pin16 of IC501 at the moment of restart? :&4 /0 Is ok T501, T502? :&4 Check protected circuit Q501, Q502, Q503, Q504 Is Ok IC501? /0 T501, T502 fail :&4 U501, U502 fail IC501 fail &/% 35