Vizio VM60P HDTV10A Service Manual page 95

PDP display nothing (HDMI1, 2, 3, 4)
Block1
Is HDMI signal
on?
Is picture on
screen?
Is picture on
screen?
ONFIDENTIAL – DO NOT COPY
N0
Check input source
YES
Check I2C bus
U34, U36, U37, U39
SCL pin 6
SDA pin 5
Check
U29(SiI9025) pin 103 high
N0
V sync R366
H sync R367
Clock R368
Check Source
Q28, Q31, Q34, Q37
high(3.3V)
YES
Check U29 I2C bus
CSDA pin 27
CSCL pin 28
YES
Check U29 all power
Check U29 RGB data bus
B RP1, RP2
N0
G RP3, RP4
R RP5, RP6
Check power
No
U34, U36, U37, U39
5V pin 8
No Check +3.3VSB
FB23, FB24, FB25, FB26, FB27
+1.8V_HDMI U6 pin 2
YES
Check Gata
No
Q28, Q31, Q34, Q37
high(5V)
No I2C add. R371
Yes U29 fail
Check schottky diode
1.D30, D31
No
2.D33, D34
3.D36, D37
4.D39, D40
1.D30 or D31 fail
2.D33 or D34 fail
3.D36 or D37 fail
4.D39 or D40 fail
No Check crystal
Y2=28.322MHz
Q28 or Q31 or Q34 or Q37 fail
No
Check Block 2
No
Page 10-6
File No. SG-0214
No