5-1. No Video

Black

Yes

Is OSD normal?

Yes

Is the contrast

at its maximum?

Yes

Is the output of ADC correct?

Yes

Next Page.

Yes

No

3. No raster

or Check SDRAM.

No

 

Set the contrast

 

 

up to Max.

 

 

 

 

No

Is the input of

 

 

 

 

ADC correct?

Yes

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

Check the video

 

 

Replace the main board

 

input signal.

 

 

 

(or replace ADC).

 

 

 

 

 

 

 

 

 

Is the output

 

No

Is the input of

of Scaler correct?

 

 

Scaler correct?

 

 

 

Yes

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the main board

Check If

 

 

 

 

 

 

 

 

(or replace ADC).

the CN5 wafer is

 

 

 

 

 

 

 

 

 

 

 

well connected at

 

 

 

 

 

 

 

the LCD panel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

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Daewoo L510B1 service manual Black