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Ty Paul for your reply!! 2informaticos Q7085 problem.. already replace and the machine comes to life! many thanks!!

Hey, Another one, with fake charge work perfectly but original don't!! no liquid damage.. what can be? thanks

Now t's working! But only start to work after ultrasonic cleaner!!! After that the machines Start well and show image! so stupid!! but It's working!! thank you one more time

yes... when i put the charger on megasafe i have 1V05_S0 = 1.056V!

Ok, already replace R7611/12 and u7600!! Fan start but stop and don't turn on! it's look's OK! so stupid, i only take the resistor and clean the pad and put it again...

Working on 3437, with a bit humidity!! This board initial it's working but without image. i hear the post sound and the keyboard had a backlight.. After inspect the board i noticed R5177 + R5178 bought are corroded! i clean the pads and replace the components! But the problem remained...

heeh, Replace D7010 and problem solve!!! You Rock with electronics! thank you

Hey, initial this board came with corrosion on c7210,c7215,r7210. i replace this components and the machine work's fine only with fake charge!! with original charge don't have green light and not charge! already replace Q7180 no changes! any idea??

OK, in this morning arrives other mac pro 13 late 2013 and i test this 2 boards i spoke on top and all boards run's perfectly on it!! i run the heaven benchmarket for 5 min and no issues!! i don't have a flat cable to test to know if it's a problem off LCD or ftlat cable!! in your's opinion...

https://drive.google.com/file/d/1b3zpY44ZxV9InlrXh9QLERF5Vs0CaZ6X/view?usp=sharing

Wow!!! so many work i have done and the problem is the bat led con!! when i put the flat cable off bat led connector the charger circuit are out off control! I was measuring in the morning PPBUS = 12.3V with motherboard assembly on the machine.. Already replace again U7000, PPBUS not changing, i...

Ok, i already reballed SMC and the voltage on PPBUS but remained in the 12.34V. After that i replace again U7000 and the voltage stabilized in the 8.41V. I set up the board and first time i entered on OSX i saw on the icon off batery 53% charing!! I think this board it's done... But i take the...

Hey, I have 2 machines here, same model. All this machines as complete new, no one before me open that. No signals off liquid damage or components knokout! Machine 1 - Run's perfectly, but when i run the heaven benchmarket after 1 - 2 min the screen goes black or freeze! like that...

first i replace u7000 and PPBUS established on 8.41V and SCL/SDA lines 3.4V . when i put the battery and test if everything it's ok and not charge again!! the PPBUS goes again to 12.3V. then i did a reflow on SMC he danced, PPBUS established on 8.41V and SCL/SDA lines 3.4V again and when i...

https://drive.google.com/file/d/1-Ciw4G2D0zVRwRbOv_R-PAIYUEZIYtCi/view?usp=sharing Ok.... SCL/SDA bought with 407V diode mode! i think the problem not here!! pins 17/18 - 20ohm pins 27/28 - 3.4ohm !! But you hit the spot 2informaticos !! ppbus 12.3V !! what you think U7000 problem right??

hey, This machine came with a tipical problem C7771 .. I replace wok's fine but don't charge the battery .. already test with other good battery and same history!! already replace Q7055, Q7057, Q7056, Q7058 in same time for a donor board! In OSX say's battery not charge .. thanks

Yes, you are right!!! DEAD GPU! One question, i have a 2849 A and this board came with a GPU problem, and while i was waiting for the chip i took Q7490 to repalce for Q7510 on 2915 board! When the GPU arrive i replace the chip and when i go to test if everything it's ok i forgot the Q7490. My...

Hey, working on this board and C7536 ,Q7510,Q7515 are damage!! i replace this 3 components same time and the board work's fine... but lasted 2 hours. i already replace again this 3 components more u7400. Now, When i plug the charger, the machine turn on goes off then on and when goes to show...

Hey guys again, this board is making me crazy!! Already replace for a new one LVDS connector, GMUX, And Graphic chip for new one!! Same History, the picture off the screen is the same as a put up!! anyone have more ideas?? thank you

https://drive.google.com/file/d/1H0Ij04WyH-unELZPoAJvBw2-x4MviD8Q/view?usp=sharing with only integrated graphic same history.. i will replace again for a new lvds connector! then i will replace the Gmux because is the original Gmux! what you think?? in external monitor works perfectly!