macbook pro a1286 .....820-3330-b..no display

[NIKHIL@1997]

hi..i have a macbiik pro a1286 ..part no is 820-3330-b...before it was working everything is ok...but accidently i remove the lcd cable(on working condition)......after that there is no display on screen...but iam sure external display is ok...already i check another same display...still same...plz give me a solution

 

[2informaticos]

Post some J9000 voltages; pins 2/3, 4, 6, 7, 38-40.

 

[NIKHIL@1997]

pin 2&3 :-3.3v
pin 4 :-3.3v
pin 6 :-3.3v
pin 7 :-3.3v
pin 38-40 :-0 v

 

[2informaticos]

Check diode mode to ground at both pins of D9701; w/ and w/o LCD connected.

 

[NIKHIL@1997]

both pins showing 0.500 -0.400 ohms

 

[2informaticos]

Don't write ohm, for diode mode readings.
0.500 ohm is same as 0.5 ohm which is pure short in fact.

Post LCD_BKLT_EN/PWM levels.

 

[NIKHIL@1997]

LCD_BKLT_EN :- 0V
PWM :- 0V

 

[NIKHIL@1997]

What next.....

 

[2informaticos]

Backlight is not even enable, don't waste time in that area.

Can you detect image, using a flashlight from behind?
Actually get external video for sure?
Can you confirm USB activity?

 

[NIKHIL@1997]

this one ready sir.....this is lvds connector problm.....inside burn...( i think when i remove the lvds cable without unplug the power..thats why damage the connector...thank u for your support...