LG LAS950M Service Manual page 37

ELECTRICAL TROUBLESHOOTING GUIDE
NO HDMI_3.3V
YES
Is 3.7 VA to pin2 of
IC801 normal?
YES
Is there H (3.3 V) voltage
to pin1 of IC801?
YES
Is there DC voltage
to pin3 of IC801?
YES
HDMI_3.3V power line is normal.
NO HDMI_1V
YES
Is HDMI_3.3V to pin1, 4
of IC802 normal?
YES
Is there DC voltage
to pin8 of IC802?
YES
HDMI_1V power line is normal.
NO
Check IC305 & 3.7 VA power line.
NO
NO
Replace R847, R849, R850 & IC801.
NO
Check IC801 & HDMI_3.3V power line.
NO
Replace R852, R853 & IC802.
2-18
Check R848.