DOWNLOAD LG 32LG50D (CHASSIS:LE81D) Service Manual ↓ Size: 6.77 MB | Pages: 34 in PDF or view online for FREE

- 13 -

1) Does not minute discharge at module.
2) Non does not come into the front LED.

Is the power cord plugged in?

Plug in the power cord.

Yes

No

Is the Line Filter and Power

Board Cable connected?

Connect the Cable.

Yes

No

Is the appropriate Fuse on

the Power Board?

Replace the Fuse.

Yes

No

Is the Power Board and 13P of

VSC Board Cable connected?

Connect the Cable.

Yes

No

After removing the cables, connect them to the Power Board, and
change the AC voltage marking to manual.
When ST-BY 5V does not operate, replace the Power Board.

- 14 -

Is the Inverter on?

Is the LVDC cable

normal?

Replace the Module.

Yes

No

Yes

Yes

Reconnect the LVDS

cable in P400.

No

Is the IC1200(Torino)

Output normal?

Replace the Main B/D.

No

No

Replace the Power board.

Is the all of the output voltage

normal except for stand-by 5V?

1) No OSD and image occur at screen. 
2) It maintains the condition where the front LED is blue.

- 15 -

- There is no screen display from a specific input mode.

(RF, AV, Component, RGB, HDMI)

- Check the all input mode have normal display.

Is the Tuner normal?

Is the CXA2069(IC300)

normal?

Is the RF Cable connected?

Re-insert the RF cable.

Yes

No

No

Yes

Is the Torino(IC1200)

normal?

Replace the Tuner.

Are the Input voltage, IIC Communication

and CVBS output normal?

Yes

Are the Input voltage, IIC

Communication and HV sync normal?

No

Replace the IC300.

No

Are the input voltage, IIC

Communication and HV sync normal?

No

Replace the IC1200.

No

No

Are the AV input of JK103,

JK104 or SK105 normal?

Yes

Is the CXA2069(IC300)

normal?

Check the input source.

No

Are the Input voltage, IIC Communication
and HV sync normal?

No

Replace the IC300.

No

Yes

Same as Block A

Is the RGB input and H,V Sync of the P601 normal?
Is the Component input of JK100 or JK101 normal?

Yes

Same as Block A

Check the input source.

No

Is the SIL9125(IC702)

normal?

Are Input voltage, IIC Communication

and HV sync normal?

No

Replace IC702.

No

Yes

Same as Block A

- 16 -

1) LED is Green.
2) Screen display appears but there is no sound.

Is there no sound for

all input(modes)?

Is there no sound

onlt in HDMI?

No

Yes

Download

the EDID data

Check the signal after

CAX2069 refer to circuit diagram

No

Is ther no sound only in

Component, RGB mode?

No

YES

YES

Is there no sound

only in RF?

Check the

Tuner IN/OUT

No

YES

YES

Is there no sound only

in AV mode?

Is the output of CXA2069

(IC300) normal?

No

YES

Is the MSP4450K(IC500)

operating normally?

Replace the IC500.

No

IS the NTP300A(IC501)

operatioing normal?

Replace the IC501.

No

YES

Replace the Main B/D.

YES

No

Replace the IC300.

Is the speaker on?

Set on speaker

on in menu.

No

Is the speaker cable

normal?

Check the

speaker cable.

No

Yes