MacBook Pro A1502 Not turning on (power cycling 20–60 mA) repair

Problem description

 * 1) incomplete

Symptoms

 * Not turning on.
 * Cycling between 20 to 60 mA current draw from the power supply.

Solution
PP5V_S0 shorted to ground via bad C6412 or C6432 capacitor, also PP5V_S3 will read shorted as it is connected to PP5V_S0

Fixed by replacing C6412 or C6432 capacitor.