DOWNLOAD LG 26LV2500-UG (CHASSIS:LA01Y) Service Manual ↓ Size: 4.61 MB | Pages: 45 in PDF or view online for FREE

THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.

SIDEAV_L_IN

C9907

100pF

OPT

C9905

100pF

50V

SIDE_CVBS

L9901

BLM18PG121SN1D

SIDE_CVBS

R9916

12K

SIDE_CVBS

+3.3V_Normal

SIDEAV_R_IN

L9903

BLM18PG121SN1D

SIDE_CVBS

R9906

470K

SIDE_CVBS

R9905
470K

SIDE_CVBS

L9902

BLM18PG121SN1D

SIDE_CVBS

R9907

75

SIDE_CVBS

JK9903

PPJ235-01

SIDE_AV_3HOLE

4A

[YL]O-SPRING

5A

[YL]E-LUG

3A

[YL]CONTACT

4B

[WH]O-SPRING

3C

[RD]CONTACT

4C

[RD]O-SPRING

5C

[RD]E-LUG

D9902

5.6V

OPT

ADMC5M03200L_AMODIODE

SIDEAV_CVBS_IN

C9906

100pF

50V

SIDE_CVBS

R9917
12K

SIDE_CVBS

R9911

10K

SIDE_CVBS

D9904

5.6V

SIDE_CVBS

ADMC5M03200L_AMODIODE

R9914

10K

SIDE_CVBS

D9903

5.6V

SIDE_CVBS

ADMC5M03200L_AMODIODE

R9915
1K

SIDE_CVBS

SIDEAV_DET

R9913

10K

SIDE_CVBS

D9901

30V

SIDE_CVBS

ADUC30S03010L_AMODIODE 

C9901

100pF

SIDE_CVBS

JK9901

KJA-PH-1-0177

SIDE_AV_GENDER

3

M3_DETECT

4

M4

5

M5_GND

1

M1

6

M6

SIDE_JACK

20110324

18

GP3_S7LR

(New Item Development)

SIDE CVBS PHONE JACK

1. Power-up boot check

Check X201 clock

24 MHz

Replace X201

Replace Q7506

Check Mstar LVDS Output

Replace Mstar(IC101) or Main Board

ok

ok

ok

ok

ok

ok

No

No

No

No

ok

Check Adater power.

JK7500 : 24V 

Replace Adapter

No

Check Standby Voltage

C7538 : +3.5V_ST

Replace IC7503

Check R7509(RL_ON).

RL_ON : 3.3V

Replace Mstar(IC101) or Main board

Re-download software.

No

No

Check IC7502/7, IC403/7 Output Voltage

IC7502 : 12V

IC7507 : 5.0V

IC403 : 1.1V
IC407 : 1.5V

Q403 : 3.3V

No

Replace IC7502/7, IC403/7, Q403

Check LVDS Power Voltage

Q7506 : 12v(26”)

Change Module

ok

No

Check Inverter Error Out & Control

P7501 11 pin : Low

P7501 12 pin : High

Check  Module

2. Digital TV Video

Check RF Cable & Signal

Check Tuner 3.3V Power

L3703

Replace L3703

Check Tuner 1.8V Power 

IC3703  2 pin : 1.8V

Check IF_P/N Signal

TU3700 10/11 Pin

Replace IC3703 

Check Mstar LVDS Output

Replace Mstar(IC101) or Main Board.

ok

ok

ok

ok

No

No

No

No

Bad Tuner. Replace Tuner.