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I have a 820-2879 with no water damage, has a green light but does not power on. All S5 power rails are present, but all S3 and S0 rails are missing. PM_SLP_S4_L is missing too and I believe this is what is responsible for enabling the S3 rails? Does U1400 create PM_SLP_S4_L on this machine or...

I have a 13" 2015 Macbook Pro that the LCD assembly was replaced by another shop. It worked for 3-4 months and now came into us without producing a backlight on startup and it will only boot with backlight into password recovery mode? We replaced the entire board (820-4924) but the issue still...

We have a water damaged 2015 Macbook Pro that originally came to us from another shop having display issues. Sometimes backlight works sometimes it does not. We have replaced the display and the entire logic board and the display issue continues?? Has anyone seen anything like this?

I have an 820-3437 that randomly shuts down; either 5-10 seconds after logging in or during the Apple Logo screen. No water damage at all. My question is has anyone seen this before or heard of a recall from Apple and if I should advise my customer to take it to Apple first or start with the...

I have a 820-3435 that powers on, boots to login screen and after I enter password will not boot to the desktop. The loading bar fills after I enter the password and then it freezes? I run ASD and it says Chipset (test1)- Management Engine Presence Failed- presence of Management Engine not...

I have a 820-00164 from another shop with no water damage, green light, but no power. PPBUS_G3H is at 1-2V so I imagine a short. Visual inspection and C7314 is destroyed. I replace it and still no power/fan and PPBUS_G3H is now 4.5V. After measuring around forever, I finally measure BOTH pins of...

I have a water damaged 820-3437 that powers on, there is backlight for a sec then it turns off and also there is no green light. I have replaced LP8550 already and also ran a trace from ball 5 on LP7701 to pin 1 of C7796 because I thought I had a bad feedback trace. (Any suggestions on an easier...

I have a water damaged 820-3536, everything functions fine. Except after boot up (about 20-30 seconds) the fan runs at an extremely high speed. The weird thing is that it passes ASD test; all sensors test fine. There is also no visible damage. Any help would be much appreciated.

I have a 820-3115 with a green charging light that turns on, then turns off, then turns on again?? Has anyone seen this before??

We had customer bring in a 2013 A1398 with cracked LCD. We replaced the LCD and there is no backlight/image. We tried 2 different LCDs and neither worked. We reinstall the old LCD and backlight and scrambled image is there. Has anyone seen anything like this before??? I know there is a...

I have a 820-2936 that does not recognize the hard drive. The drive has power but I still get flashing folder. Tried new cable, etc. Everything seems to measure correctly. Any ideas?

Any ideas or sources where I can find more logic board repair work??? Any ideas would be much appreciated!!!

Prob stupid question but I was just wondering if spinning beach ball when opening programs can be a logic board issue??

Solved now

I have an another 820-3437 with no backlight, but I have 40V one side of D7701 and 8.5V on the other. does this mean it is not seeing the screen??

I have a 820-3437 when I open lid, display turns on for a second then off. If I push power button the display turns on for a second then off??

I have a 820-3476, has a green light, fan spins for 2-3 seconds then immediately shuts down. No visible water damage, Any ideas??

Just wondering what donor boards to stock?? I know Louis suggested some years and board numbers/models to always have on hand in one of his posts but I cant find it. Could anyone, or Louis help me out?

Can anyone help me out with this one?? I do not know where or how to get the dump file from mac??

I replaced the BIOS chip on 820-3662 due to computer getting stuck on Apple Logo. ASD was failing system Management Engine test. Now computer boots to user screen, but after password is entered the user will load halfway??? I run ASD again and it still is failing?? Any ideas??