Defective Hdmi - LG 47LB1DA 1080p LCD Training Manual

TROUBLESHOOTING

DEFECTIVE HDMI

Is there snow on the screen?
NO
Video is normal, but no sound?
NO
Check MST3361 (IC603) inputs
power, OSC, #25/26(RX1C-, RX1C+),
#14/15(RX0C-, RX0C+)
YES
Check MST3361 (IC603) outputs
#99(V-out), #98(H-out),
#96(Clock), Data
YES
CCheck CPLD (IC301) V-Sync,
H-Sync output, #95(VD), #96(HD)
YES
Check CY2309 (IC203)
#1(REF), #15(CLKA4)
Directview LCD Training
YES
Power off and on
(TV or STB/DVD...)
SCL:
SDA:
YES
Reload EDID data (IC605/IC606)
RX0C-/+:
RX1C-/+
DE:
CLK:
Hsync:
Vsync:
Data:
32
Check HDCP power (IC604)
MST3361 (IC603), #69/70 (IIC)
Freq: 50kHz~400kHz
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59.94 Hz
Digital Data
Troubleshooting