Read LG 32LT360C-TA / 32LT36WC-TA (CHASSIS:LB2AC) Service Manual online
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TROUBLE SHOOTING
1. Check the booting Voltage
Make sure the Stand - by Voltage
P403 9~12pin : +3.5V_ST
Make sure the Micom voltage
L404 : +3.5V_ST
Make sure the CLK of X201
Is 24MHz
Make sure the PWR_ON of P403
1pin : 3.3V
Make sure the Multi Voltage
P403 2pin : 24V, 17pin : 12V
Make sure the Output Voltage of IC 402/3/7
IC402 : 2.5V, IC403: 1.1V, IC407 : 1.5V, Q403 : 3.3V
Make sure the Power
Connector
Make sure the disconnection
of Main board 3.5V circuit
Exchange the
Circuit board
Make sure the voltage of LVDS Power
Q409 : 12V
Make sure the output of MSTAR LVDS
Make sure the Inverter control and error
P403 18pin : High, 24pin : Low
Exchange the LCD Module
Exchange the L404
Exchange the X201
Re- download of Firmware
Exchange the circuit board
Exchange the IC402/3/7,
Q403
Exchange the Q409
Exchange the Mstar(IC101)
or Main board
Exchange the circuit or
check the LCD module
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Exchange the Mstar(IC101)
Or Main board
Check the Stand - by Voltage
P403 9~12pin : +3.5V_ST
Check the Tuner 3.3V
; L3703
Check the Tuner 1.8V
IC3703 2pin : 1.8V
Check the IF_P/N signal
TU3704 10/11pin
Check the LVDS output signal of Mstar IC
Exchange the L3703
Exchange the IC3703
Exchange the Tuner
Exchange the Mstar(IC101)
Or Main board
No
No
No
No
Yes
Yes
Yes
Yes
2. Digital TV Video
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