Recent content by yelrah28

The online readings for pp1v1_s3 and pp1v8_s3 are abnormal compared to my current readings, and both are linked to the CPU. Could this mean the CPU is the issue? I already tried a new battery today, but nothing changed. Apple Configurator gets stuck midway—no error, just a lock icon appears, and...

Sorry for the late reply my shop was closed on Sunday. I don’t have a known-good board to compare with. I mainly repair iPhones, but I took on this MacBook as a challenge. Here are the rails I checked: Secondary power rails: PP5V_S5: 5.0 V PP3V3_S5: 3.3 V G3H and T2 PMIC rails are good. G3S...

I did some digging and found out these lines. They get the exact voltages after a fresh charger plug-in then about 10 seconds, they loose power. These lines are from U7800. Pp0v9 slpddr 0v Pp1v2 awake 0v Pp1v8 awake 0v Pp3v3 awake 0v Ppvddcpusram awake 0v I did these test because I suspect...

Hi @2informaticos Customer reports the device suddenly stopped working and won't power on. Voltage Readings: L7400: 0.1V L7230, L7220, L7210, L8410, L8100: No voltage L7030: 12V L7690: 3.3V L7670: 5V

Hi, I have a question about a MacBook Air I'm working on. It's a MacBook Air A2179 with logic board 820-01958. The logic board looks completely clean no signs of corrosion or liquid damage. The machine negotiates 20V over USB-C, and I've confirmed the presence of the main power rails: 5V 3.3V...