Measure +5VSB on the 24-pin ATX (pin 9 – purple wire). If 0V, PSU is bad. If present, move to board.
For the N15235, a boardview is arguably more useful because Foxconn boards rarely have silkscreened component labels. You cannot find R215 or C112 without it. Let’s simulate a real repair scenario using the schematic’s logic: foxconn n15235 motherboard schematic
Force the PSU on by shorting PS_ON# (green wire) to ground. If all rails come up, the SIO is failing to pull PS_ON# low. Check the SIO’s RSMRST# (should be high – 3.3V). If low, replace SIO or check for a short on the PCH side. Legal and Ethical Considerations Downloading proprietary schematics exists in a gray area. Foxconn holds copyright over these documents. However, for personal repair or educational use, most manufacturers turn a blind eye, as official support for this legacy board (circa 2011-2013) has long ended. Measure +5VSB on the 24-pin ATX (pin 9 – purple wire)