LG LAS950M - Page 37

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