LG 42LH50 - T-CON Voltage Checks

2009 FALL LCD DV 42LH50
43
T
T
-
-
CON (TFT Drive) PWB Checks
CON (TFT Drive) PWB Checks
T-CON PWB
Check Fuse
F1 for 12V
F1
CN1
LD1
Use LD1 to determine if the boot up sequence of the T-CON is OK.
This LED will turn bright Blue shortly after power is applied then will
go out in about 30 seconds. This assist the backlights in firing.
Power Off Power 1
st
On
Anode 0V
Cathode 0V
Anode 3.3V
Cathode 0.7V
Power On
Anode 3.3V
Cathode 1.4V
LED OFF LED ON LED OFF
Anode Cathode
From Pins
48~51
Check the Regulator
U11 for Correct Voltage
1.8V
3.3V
0V