Ps3 Fat Power Supply - Pinout !exclusive!

Always check the power cable and unplug the unit before poking around. PS3 power supplies contain large capacitors that can hold a dangerous electrical charge long after the unit is disconnected.

This is where most people blow a fuse.

Power On (STBY_ON) — Pull high (connect to 5V) to activate the 12V rail. Pin 4: ACIN_DET (AC Power Detection). Pin 5: Optional/Ground (varies by revision). ps3 fat power supply pinout

Before you stick your multimeter probes in there, take a step back. The PS3 Fat power supply is not your standard PC supply, and treating it like one is a recipe for a fried motherboard.

But tonight, nostalgia had bitten hard. He wanted to play Metal Gear Solid 4 again. Always check the power cable and unplug the

Dead silence. The standby voltage was missing.

—the exact wiring can vary slightly, but the core architecture remains consistent. The Core Connector Layout Power On (STBY_ON) — Pull high (connect to

That night, he didn’t just play Metal Gear Solid . He played it knowing that every amp, every ground, and every carefully mapped pinout told a story of resurrection. And the "fat" PS3, now humming quietly under his TV, had earned another decade of life.

He decided to build a dummy load. The PSU wouldn’t turn on without a load on the 12V rail—it was a switching power supply, smart enough to stay off if it sensed no consumption. He soldered a 10-ohm, 10-watt resistor between pin 13 (12V) and pin 1 (GND). Then, he shorted pin 7 (PS_ON) to pin 2 (GND) to simulate the "turn on" command.

First, he tested the PSU on its own. He plugged the AC cord into the wall (carefully—he knew the primary capacitors could hold a lethal 380V charge). He probed pin 5 (5VSB). Nothing. Pin 7 (PS_ON) was supposed to be a high signal (3.3V) when off, and ground when on. It read 0V.

Located on the bottom, these are two large holes that slide onto metal prongs (bus bars) on the motherboard. One is +12V and the other is Ground .