Adaptar Fuente De Pc A Ps4 Fat 🔔 ✨
With the PC PSU off but plugged in, the PS4 should show a red standby light on the power button (if 3.3VSB is correct). Press the power button. The fan should spin, the blue light turn on, and the console boot. If nothing happens, immediately unplug and re-check your PS_ON inversion circuit.
| ATX Rail | PS4 Requirement | Compatible? | | :--- | :--- | :--- | | +12V (main) | 12V / 10-15A | Yes – modern ATX supplies provide 20A+ on +12V. | | +5V (standby) | 5V standby | Yes – ATX has a dedicated 5VSB line (2A typical). | | +5V (main) | 5V for logic | Yes – but PS4 uses +5V only in standby, not main operation. | | +3.3V | Not used | No connection needed. | | -12V, PG, etc. | Not used | No connection needed. |
| Risk | Severity | Mitigation | | :--- | :--- | :--- | | Electric shock | High | Never open an ATX PSU unless experienced. Discharge capacitors. | | Fire from short circuit | High | Use proper gauge wire (18 AWG or thicker for +12V). Add a fuse (12A slow-blow) on +12V line. | | PS4 motherboard damage | Medium | Double-check pinout. Reversed +12V and GND will destroy the console. | | No standby power | Medium | Ensure 5VSB (purple wire) is present and connected to Pin 5. | | PSU fan noise | Low | ATX PSU fan is often louder than original. Use a "fanless" or low-noise model. | | Aesthetics and size | Low | The PS4 case will not close with an ATX PSU inside. External mounting required. | adaptar fuente de pc a ps4 fat
Some PC PSUs need a minimum load on 5V or 12V to regulate properly. Attach a 10Ω, 10W resistor between 5V and ground or a 12V PC fan. Without it, the PSU might shut down or deliver unstable voltage.
Because the PC PSU remains external, you will need to cut a notch in the PS4’s rear plastic or run the wires through the original AC socket hole. I recommend purchasing a DC power jack panel mount and building a compact adapter box. With the PC PSU off but plugged in,
Never run the PS4 without the top shielding – the 12V rail carries high current and the motherboard can short against any metal.
| Problem | Likely Cause | Fix | |---------|--------------|-----| | Red light present, no power-on | PS_ON signal not reaching green wire | Test with multimeter: When pressing power, does PS4 output 3.3V on its PS_ON? If yes, check transistor. | | PSU shuts down after 2 seconds | No load or short | Add a dummy load (HDD or fan). Check for short between 12V and GND. | | 3.3VSB drops when power pressed | Regulator can’t supply enough current | Upgrade to a 1A LDO regulator or use a DC-DC buck converter (5V to 3.3V). | | USB ports don’t work | 5V rail missing | Confirm red wires are soldered correctly. | | Disc drive doesn’t eject | 12V not present | Check yellow wires. | | ATX Rail | PS4 Requirement | Compatible
Before cutting any wires, study the PS4 motherboard’s power connectors. The original internal PSU provides three main voltages through a 6-pin or 8-pin connector (depending on your exact model):
| Pin / Rail | Voltage | Typical Max Current | Role | |------------|---------|--------------------|------| | 12V (2-3 pins) | +12V | 10-13A | Main rail for disk drive, fan, and amplifier. | | 5V (1-2 pins) | +5V | 2-3A | USB ports, audio codec, HDD controller. | | 3.3V SB (1 pin) | +3.3V | ~0.5A (constant) | Standby power for ICs, power button, Wi-Fi/Bluetooth. | | Ground (3-4 pins) | 0V | - | Return path. |
Critical note: The PS4’s power-on sequence is not like a PC. The console uses the 3.3V standby rail to keep the Southbridge (SORI/Renesas chip) alive. When you press the power button, the Southbridge sends a PS_ON signal to the original PSU. On a PC PSU, we must replicate this.
