LG Electronics LD84A service manual Troubleshooting, No Power, Symptom, Check process

Page 14

TROUBLESHOOTING

1.No Power

(1)Symptom

1)It is not discharged minutely from the module.

2)Light does not come into the front LED.

(2)Check process

Is inserted a plugged

No

 

 

Plug in the power cord.

in power cord?

 

 

 

 

 

 

Yes

Is the Line Filter

No

 

Connect the Cable.

and Power Board Cable

 

connected?

 

 

 

 

 

 

 

Is the fuse of PSU

No

 

Replace the Fuse.

 

normal?

 

 

Yes

Is it connected

No

 

Connect the Cable P1100.

that PSU and P1100 in

 

Main B/D?

 

 

 

 

Yes

After all cables connect is removed to PSU, the AC voltage marking is authorized on manual.

When ST-BY 5V, +15V are not operated, replace PSU.

If there is normal status, Replace main board.

Copyright © 2008 LG Electronics. Inc. All right reserved.

- 14 -

LGE Internal Use Only

Only for training and service purposes

 

 

Page 13 Page 15
Image 14
Page 13 Page 15
Contents
LCD TV Contents Safety Precautions Important Safety NoticeServicing Precautions Electrostatically Sensitive ES DevicesIC Remove/Replacement Application range SpecificationModule general specification Requirement for TestModel general specification RGB PC Input Mode Component Video Input Y, PB, PRSdtv 576P SdtvSdtv 480P Hdtv 720PMain PCB check process Adjustment InstructionDesignation Calibration Component ADC ProcessFunction Check AV SCART1/SCART2/S-VHS/CVBSTotal Assembly line process Internal pressure Setting Scaler MstarOutgoing condition Configuration Symptom TroubleshootingNo Power Check processNo Raster Unusual display from TV/CATV mode Unusual display from DTV modeUnusual display from Component mode Unusual display from AV1/AV2SCART modeUnusual display from AV3SIDE AV mode Cvbs Input RGB InputUnusual display from RGB mode Unusual display from Hdmi 1/2/3 modeNo Sound Diagram BlockMemo Exploded View Page Page Page Feb
Related manuals
Manual 26 pages 22.79 Kb