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Because of pin 13, I analyzed the area near U7501. The R7539 was altered on the board, outside the board measuring 20k. I compared it in diode mode with another board, pin 1 on the R7539 was 0.500 and on the good board it was 0.740. I changed the C7539 and now I have 20k on the R7539. The board...

When it doesn't recognize the charger, I don't have any light. Battery icon on MacOs also shows charger connected. I had already tested the ISL, pins 17.18 - 4ohms, 27.28 - 20ohms The Mac turns on, do I test it in SMC bypass mode to check if it charges the battery?

U7501 23 - 8.6v 22 - 3.3v 12 - 3.3v 13 - 1.9v (strange) 29 - 5v 21 - 3.3 Diodo mode L7520 - both pins 0.450 L7560 - both pins 0.360

Diode mode in both - 0.560 BIL? MacBook Air?

PPBUS_G3H - 8.6v SMC_RESET_L - 3v SMC_PM_G2_EN - 3.3v

Now the PPBus is 8.16v

I tried reballing and changed the SMC. It didn't solve it. As long as there is charge in the battery, it turns on and works. But it doesn't recognize the charger.

I don't have the 3V3_S5, it's impossible to have the _SUS! I didn't find any other components damaged or shorted. PPVRTC_G3H - 3.3v PP3V3_S5_SMC_VDDA - 3.3v PP3V3_S5_AVREF_SMC - 3.3v

After a week of running, the Mac stopped. I don't have 3V3_SUS.

Very complicated Mac. It arrived without recognizing MagSafe and cooler fired. I only discovered the oxidized U5800. I cleaned everything and replaced it, the Mac worked perfectly for 2 days and stopped recognizing the MagSafe (no LED and the system does not recognize the connected MagSafe). I...

I was on vacation and came back today, the Mac is working. I'll keep testing and hope to stop again, to check the lines. I had the original MagSafe 2. With amber light.

Board arrived without turning on. I found oxidation in the oxidation on R1663/62/66/26. I replaced them all and it didn't work. Checking the voltages, I noticed problems with the SMC. Replaced it and the mac turned on, worked perfect for two days and stopped. SMC bypass did not work. PPBus is...

problem was the U8000. Replaces and stabilized 3.3v_S4 Thank you very much for the help!

I replaced the R4804, it didn't solve the problem. but I discovered that pin 2 (PP3v3_S4) has 2.1v

Perfect board. No oxidation. Does not work before starting MacOs. I changed the trackpad flex, it didn't work. I checked the resistors near U4801, they are OK. BUTTON_DISABLE - 0v Smc_lid - 3.3v PP3V3_S3_PSOC - 2.1v (weird) USB_TPAD_N - 0.500 and 0v diode mode USB_TPAD_P - diode mode 0.530...

I put it to wash in the ultrasonic tub and it worked. I'm in testing.

Clean logic board, without oxidation. When I connect the power supply, it turns on, runs the cooler for about 7 seconds and restarts. During testing, it turned on normally. I assembled it all and when the system started, it froze and the screen was all streaked, it didn't turn on again. I...

I'm an idiot. The problem was R7012, I was fooled by the protection, it was underneath. Once again, thank you very much for your help.

Logic is perfect, no oxidation. The Mac works, but does not charge the battery with original magsafe. I changed the working DC, removed it from another Mac to test. I changed the Q7180 (new) twice. I checked and the R7110/11, 7151/52, 7121/22 are OK. PPDCIN is at 3v. Any tips?

Did not work. I washed the logic in the tub, but the problem continued, probably a bad PCH. Thank you for your help!