820-3437-B Bootloop on Brymen BM857s, B&K Precision 390A and oscilloscope
Channel: piernov
Date: 18/01/2019

Observing the spikes on PM_SLP_S4_L when a 820-3437 Macbook Air 13" 2015 logic board bootloops on 2 multimeters, the Brymen BM857s and the B&K Precision 390A, and an oscilloscope.
The B&K Precision multimeter misses the spikes, but they still show up on the bargraph. The Brymen and the oscilloscope can catch the voltage spikes, although the Brymen shows a random voltage between 0.8V and 1.2V.