Finding the exact schematic for your board is the first step. There are multiple revisions of the 17IPS62 (e.g., -R2, -R4), and slight differences may exist. Here is the most comprehensive guide for acquiring the correct documentation:
The 17IPS62 exists in multiple revisions. Compatibility is not always guaranteed: 17ips62 schematic diagram
Working with switch-mode power supplies involves working with high voltages that can be lethal. Always discharge the main capacitors before touching the board and follow proper safety precautions. Finding the exact schematic for your board is the first step