Read LG 19LV2500-ZG / 19LV250A-ZG / 19LV250N-ZG / 19LV250U-ZG (CHASSIS:LD01R) Service Manual online
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1. Power-up boot check
TROUBLESHOOTING
Check stand-by Voltage.
C7538 : +3.5 V_ST
Replace IC7503.
Check X201 clock.
24 MHz
Replace X201.
Check 7509(RL_ON).
RL_ON : 3.3 V
RL_ON : 3.3 V
Replace Mstar(IC101) or Main board.
Check LED Driver
P10000(LGD), P10001(NONLGD)
P10000, P10001 3 Pin : 24 V
P10000, P10001 4 Pin : 24 V
P10000, P10001 4 Pin : 24 V
Replace IC10000.
Check IC402/3/7 Output Voltage.
IC7502 : 12 V
IC7507 : 5.0 V
IC403 : 1.1 V
IC407 : 1.5 V
Q403 : 3.3 V
IC7507 : 5.0 V
IC403 : 1.1 V
IC407 : 1.5 V
Q403 : 3.3 V
Replace IC7502/7, IC403/7, Q403.
Re-download software.
Check Adapter power.
JK7500 : 24 V
Replace Adapter.
Check LVDS Power Voltage.
Q7506 : 12 V(26")
Replace Q7506.
Check Mstar LVDS Output.
Replace Mstar(IC101) or Main Board.
Change Module.
ok
ok
ok
ok
ok
ok
ok
No
No
No
No
No
No
No
No
No
ok
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