Acer AT1921 - Trouble Shooting

NO POWER
Check P/B CN101 pin7 12V,
pin15V Correct?
Separate M/B & P/B Check CN101
pin7 12V, pin15V Correct?
Check M/B L56 3.3V L58 1.8V
correct?
Change M/B
Change M/B
Change P/B
yes
yes
No
No
No
No picture, No backlight
Check Power/B CN101
Pin9 3.3V correct?
Change
power board
Check LCD panel
Change
power board
Yes
No
No
Chapter 4
TROUBLE SHOOTING
This chapter provides trouble shooting information for AT1921/22