MacBook Pro A1502 2015-2016 Pulsing S5 enable repair

Problem description
A short on any capacitor in PP5V_S3 rail can cause S5 enable to pulse.

Symptoms

 * Pulsing enable for S5

Solution
Check C6412 (or any other cap in PP5V_S3) for a PP5V_S0 audio short to ground. This can cause S5 enable and everything above it to pulse.