BenQ VL3735 Service Manual page 100

2. Main board trouble shooting
(1) Main:
REMOTE
POWERON
Image OK?
PC D-sub OK?
Component
OK?
HDMI OK??
(
Audio OK??
NO
1. Check U19 reset successful?
2. J12 pin 11, signal OK?
YES
1. U16, U17,U18 OK?
NO
2. Check U17 Pin16 with 180Mhz
3. Check L101 is 2.5V ok?
YES
1. check U5 and U10
NO
YES
NO
1. Check L100 (5V).
2. Check L20, U6
3. Check Q6,Q7,Q8
YES
NO
1. check U8
2. Check U29(3.3V), U23(1.8V)
YES
1.
2.
ok?
Check U25
Check L72(15V) is OK?? .
100