DOWNLOAD LG 19LE5300 (CHASSIS:LA01A) Service Manual ↓ Size: 3.36 MB | Pages: 55 in PDF or view online for FREE

Model
19LE5300 (CHASSIS:LA01A)
Pages
55
Size
3.36 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
19le5300-chassis-la01a.pdf
Date
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LG 19LE5300 (CHASSIS:LA01A) Service Manual ▷ View online

6. RGB Video
Check input signal format.
Is it supported?
Check RGB Cable conductors
for damage or open conductor
Check EDID & EEPROM
IC1105 I2C Signal
R1141, R1143(SDA,SCL)
Check JK1104
H/V_Sync/R/G/B Signal Line
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check DSUB_DET
Replace R1146 or R1147
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
7. HDMI Video
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID & EEPROM
IC7700,IC7701,IC7702
I2C Signal
Check JK7700,JK7701,JK7702
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
Check HDCP Key NVRAM(IC103)
Power & I2C Signal
Replace the defective IC.
ok
No
Replace Jack
Check HDMI Signal
Check other set
If no problem, check signal line
ok
No
Check Mstar LVDS Output
Replace Mstar(IC101) or Main Board.
ok
No
Replace Main Board
No
Check HDMI_DET(HPD)
No
ok
Replace R7704,R7728,R7744
*JK7702/IC7702 : HDMI3_ONLY 26LE5300-UE
8. All Source Audio
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P7800
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC501)
ok
No
Check Connector & P7800
Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage.
Replace speaker.
ok
No
Off
Toggle the Menu
Check AMP IC(IC7801) Power
*24V, 3.3V, 1.8V.
No
Check Regulator IC7800(+1.8V_AMP)
Check Mstar I2S Output
R7801, R7802, R7803
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
TP7800 or IC7801 PIN 7
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R7804, R7805
No
Check signal line. Or replace Mstar(IC101)
9. Digital TV Audio
Check RF Cable & Signal
Follow procedure 
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L5003
Replace L5003
Check Tuner 1.2V Power 
IC5001 2 pin : 1.2V
Check IF_P/N Signal
TU5001 17/18 Pin
Replace IC5001.
Check Tuner 5V Power
L5002
Check IC401
ok
ok
ok
ok
No
No
No
No
Replace IC401
No
Bad Tuner. Replace Tuner.
Replace L5002
ok
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