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the 2nd bios doesn't work at all. fan is doing quarter fan spin.

I've tried the 1st one and sensors test is still missing. booting to macos is super slow. do you think i have a missing component?

Can you give me clean me bios for 3330 board.

You know when you load ASD EFI, left side has all the available options you can tick to test. This one only has fan, cpu, memory. No sensor.

hi 2informaticos, testing this today, booting to osx is super slow. serial is unavailable. ASD EFI doesnt show any sensor. its all empty. do you have a Clean ME bios for this 3330 board?

board is fixed.

OMG, you are right. PP5V_s0 is missing on the U8350 i couldnt see it because fan cable was in the way.

I've already got the exact chips, same code and everything, i nick them from a1278 MacBook pro 13" 2012. this board is very expensive, its one of these board has an AMD GPU. i think it is worth trying

Run OSX fine, but an application like Final Cut crashes during encoding. i then run memtest, on last 3/4 stages, there's a lot of errors. worth replacing 32 ram chips? do 1 side at a time and test?

It chimes with backlight. no image. i also have tried external display and nothing, even with LCD cable unplug. PPvcore_gpu = 0.9v L8360 = 0v (should be 1.36v) - resistance to GND on L8360 is 172 ohms PP3V3_S0GPU = 3.3v GPUVcore_en = 3.3v P3V3GPU_EN = 3.3v PPVIN_S5_HS_GPU_ISNS = 12.58v I've...

seem to have fixed itself after been through USC. i'll test the laptop for a couple of days. thanks

board was liquid damaged and corrosion was found on u7090, Q7180, Q7130, Q7155. I've replaced all these corroded parts. J9500's pin 19,21 was corroded. I've already replaced this connector. after fully charged the battery, when the light goes green then after approx 30min the green light goes...

mmm, can boot to OSX fine from the internal SSD but not an external USB boot drive. the original problem was a USB hub killed the logic board which makes perfect sense. however USB port does work, i can browse a USB drive perfectly fine. starting to hate this board.

boot to apple logo, a quarter of the way then laptop reboot. i used FDMF6708 on U7330, U7320 and left the U7310 with original FDMF6808. can this be a problem? or can it be something else, replace everything that use PP5V??

thanks for the info. the backlight is now fixed. i was right, u7701 was the culprit. now i'll do the testing.

mmm, the board is working now after replaced the two phases with FDMF6708N. but no backlight. yes got an image. 0v on pin1. fuse is good. probably a dead U7701 driver... need to check SMC_Lid first... got 2 known working MacBook pro 15" display assembly here, do you know if i can use a 13"...

it was the cpu phases, not sure which one tho. Got a Fan spin BABY!!!! i dont want put the new replacement in, just want to enjoy watching the fan spinning... #edit i've found you SUCKER

820-3662 board?? these boards have a common fault where "U7310/20/30" will stop working, you can try to replace all FDMF6808 with new FDMF6708.

could be a dead bios chip. i would try a bios chip from a donor first before doing any ME stuff.

is it wise to remove the U7330, U7320 and U7310, so the bench power supply can concentrate the board without CPU? so far i've removed U7600, R7201 (power to cam), R19920 (SPI stuff) only left to remove are the 3 CPU PHASES. after i removed the three PHASES, can i try inject more than 5v to...