Hdmi Output - LG LHD625 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE
4. NO HDMI OUTPUT
No HDMI audio / video output
JK501 VCC50 OK?
IC108
HDMI_SCL/SDA, EDID_SW, CEC_RX/TX
HDMI_RST OK?
JK501 pin19 HPD
about 3.3 V OK?
Is there signal on
pin1, 3, 4, 6, 7, 9, 10, 12?
HDMI output OK.
YES
YES
YES
YES
YES
NO
Check VCC50 IC102.
NO
NO
Check hot plug detect signal from TV.
NO Check IC500 MT1389 VCC
or replace IC500 MT1389.
2-45
Check IC108.