BenQ TL650 Service Manual page 76

Keypad LED fail
No OSD image
No PC input/ output
No DVI input/ output
No HDMI input
No DP input
No USB input
No LAN Input
CVBS repeat output no signal
VGA repeat output no signal
DVI picture display abnormal
IR function fail
Detect ambient light function fail
1. Check Q9、Q10、R162、R163、R164
2. Check P3V3
3. Check J7 soldering
1. Check P5V, P2V5, P3V3, P1V8, P1V0,
1V2, P2V
2. Check J23 PWRBD_ON and
LCD_BRT_CTRL Signal
1. Check L4, L5, L6, (VGA)
2. Check R5, R7, R9(YPbPr)
1.Check MJ6 pin14
2.Check MU26, MU27 , MU29,MU31 ~ MU33
1.Check MJ3 soldering
2.Check MU26, MU27 , MU29,MU31 ~ MU33
1. Check MCN1 soldering
2. Check MU30, MU31~MU33
1. Check J10 soldering
2. Check L110
1. Check J8 soldering
2. Check T1, U8
Check U1 operation normal?
Check U3 operation normal?
Check MU29 operation normal?
1. Check cable or change another IR board
( IR Board )
2. Check MJ2 , MU2 ,U14 ,U15, MU45 ( IR
Connector )
Check cable or change another IR board
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