BenQ V37X Product Service Manual page 118

S-Video OK?
No
Yes
No
CVBS OK?
Yes
TV OK?
No
Main board
Chk U801,+9V_MSP
Chk U801,+9V_MSP
Chk TV Tuner,+9V_TUNER
Speaker trouble shooting flowchart
1. Check AMP_IN3, +3.3V_ST
2. Check cable connection between JA1 and speaker.
No
118
1.Chk Q801,Q802
No
2. Chk J101
No
1.Chk.Q803
2.Chk J104