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OK, I think problem solved I change Q7030 because voltage on PPBUS on adapter was too high. If i find another problem on this board I will write it later. Kindly Regards Mariusz

PPBUS 11,57V Q7055 if I understood correctly "shorted". Yes, it is shorted PIN 4 - 4,5V PIN 5 - 11,57V PIN 1,2,3 - 11,57V

Hi, I have problem with this board, when i have battery connected and insert adapter then magsafe led blink and is off. Next it working from Battery. When I use only power adapter without battery it works fine. Any sugestions? Kindly Regards Mariusz

Ok, problem solved. R5805 have 8 Ohm and should be 0 Ohm Thanks for helping.

RPM is ok ~6000rpm I worry about Wifi - shows ~40C but isn't more hot that rest of board. I changed it but without good results. Now i stuck with this repair. I have next similar repair but with older mac(mid 2014). Maybe I'm doing something wrong. Maybe this is cleaning problem. Please look ASD...

Now I Have some new information from ISTAT. I solder old SMC

No, its working fine. Only fan is spinning

All temp. are fine ~24-35˚C

I changed SMC because of this problem.

Pin 17 0,910 0,640 pin 16 0,910 0,640

I tested it in working top case. Board has not turning on with battery and that was R7150 problem. Was water damaged SMC area - some pads and resistors repaired/changed. SMC i took from new board, number same but different processor.

This is diagnostic without ssd Reference Code: PFM006 AND PPN001

I dont have asd for this model (early 2015) When I use Diagnostic its show me SMC/Power Problem Trackpad flex changed

Hello I have this board after water damage. After my repair board works but with one problem. Fan runs at high speed. Could anybody have any suggest? Trackpad changed I/O Board Changed WiFi Card changed SMC Changed from Working Board All corroded elements are tested, (all which i saw) Kindly...

Ok i will reball all chips just for fun or sport or ... And close this repair Thanks for help. Regards Mariusz

Ok i could understand it with first board which has some corrosion but what with KGB which is use for tests and now have same problem?

No, now I have 2 boards with same problem I connect only IO board and speaker.

I have good working board for test for now. I put it to test other parts in this computer and now have same problem - 3 beeps WTF? Is it possible that fault caused by display?

Now is dead. Only beeps.

Ok, 1.5V present I see some components are cleaned after liquid. I forgot about one thing. I replace u7400 and its starts but stop working after 5 minutes. I thought that if CPUIMVP_AXG_PGOOD from U7400 is 0, and i change u7400 You wrote that AXG is not present is normal, please tell me when i...