[SOLVED]820-2915 Another strange issue with display

[jgraffis]

So I'm back with weird mbp. So when i got this machine the lvds connector pins were smashed and the solder was touching, other than that everything seemed to work except the screen had a green tint to it. I tried 3 different and known good screens and lvds cables all of which do something different with the video out. was thinking this was a bad lvds connector, so i changed it out to only discover the issue is still the same. Ive ran ASD 3S144 it passes everything. on external the video is perfect.

Not really sure where to go on this now. Any ideas?

 

[dukefawks]

Picture please. Measure all LVDS lines at the connector in diode mode and report values.

 

[jgraffis]

No Title

from left to right
pin40- .620
pin39- .620
pin38- .620
pin37- .648
pin36- .648
pin35- .648
pin34- .648
pin33- .648
pin32- .648
pin31- .648
pin30- .648
pin29- .460
pin28- 0 drop to ground
pin27- .448
pin26- .448
pin25- o drop to ground
pin24- .448
pin23- .448
pin22- 0 drop to ground
pin21- .448
pin20- .448
pin19-0 drop to ground
pin18- .448
pin17- .448
pin16- .0 drop to ground
pin15- .448
pin14- .448
pin13- 0 drop to ground
pin12- .448
pin11- .448
pin10- 0 drop to ground
pin9- .448
pin8- .448
pin7- .506
pin6- .519
pin5- .465
pin4- .313
pin3- .448
pin2- .448
pin1- 0 drop to ground

Man that sucked lol.

 

[dukefawks]

You numbered the wrong way, but anyway. Your 11 and 12, which are really 29 and 30 are off. They should be .448 like all other LVDS lines, check again. Also your pin 4 which is really 37 should have nothing, looks like crappy soldering to me.

 

[jgraffis]

oops my bad i change the list i made to the correct order. i remeasured again and 30 has .459 now and 29 is o drop to ground. and pin 37 has .653. ill take better pic for you to verify the solder job.

 

[dukefawks]

Pull L9011 and do the measurements again on pin 1 and 4 of L9011.

 

[jgraffis]

sooo. update to this issue. i took this board into apple and it failed vst and is covered under the quality care program. so i guess case solved?

thanks for all your help duke.