820-4668 no screen

Kyle93

Member
Arrived with damaged lcd connector and cable from previous idiot. After replacing LCD connector and cable I still do not get anything on the internal LCD.

External works but there are lines next to the ? folder (see picture)

What to check next?
 

2informaticos

Administrator
Staff member
Maybe RAM, or CPU issue, as there is no dedicated GPU.

If nothing appears on internal LCD, then DP video output could be damaged from previous repair attempt.
Check diode mode al data lines from LCD connector.
Be sure no moved, or knocked off components there.
Also check all traces continuity.
 

Kyle93

Member
diode mode lcd connector pin 1-6 .471 pin 13 .670 pin 14 .680 pin 15 .985 pin 16 .989 pin 17 .754 pin 18 .901 pin 20 .712 pin 21 .712 pin 23 0L pin 24 OL pin 26 OL pin 27 OL

since pin 24-27 are 0L could C4500-C4503 be bad? Pin 2 on C4500-C4503 are all 0.422 but pad 1 are all 0L
 

2informaticos

Administrator
Staff member
Hopeless project.
Eeven if you will get picture on internal LCD, image will still be bad; same as on external monitor.
 

Kyle93

Member
What makes it a hopeless project? There isn?t any visible board damage whatsoever. Only the internal connector itself was messed up when it arrived. Pads are all good and have continuity with new connector. Could U4500 have anything to do with it??
 

2informaticos

Administrator
Staff member
This board doesn't have a dedicated GPU.
You get a bad image on external monitor.
Solving internal LCD problem, will not solve the image aspect...
 
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