BenQ Q7T3-FP737S Service Manual page 138

Q7T3(CPT panel) LCD Monitor Service Guide
1.No Display or display is unstable
Q7T3-CPT TROUBLE SHOOTING GUIDE
No picture or picture unstable
Power off
No
Does cable plugs in
connector?
Yes
Does power stable?
Yes
Is LED light green/orange?
Yes
Is LED status normal?
Yes
Does crystal work correctly?
Yes
Is interface BD normally?
Yes
Replace panel
Yes Turn on power
No Check all of wire then turn on power
switch again.
No Check Power BD
No Check control BD
No Check Flash Rom or replace it
No Check crystal CKT or replace it
No Replace interface BD
Trouble Shooting
1