The phrase "shot SMPS" is unclear and likely a misunderstanding of common terminology. It's most likely intending to ask how to test or jump start an SMPS (Switched-Mode Power Supply) to verify its functionality outside of its intended system. Here's how you can safely test/jump start an SMPS:
Warning: Working with SMPS units involves electricity. Be extremely cautious to avoid electric shock. If you are not comfortable working with electronics, consult a qualified technician.
How to Test/Jump Start an SMPS (Using a Paper Clip)
This method is commonly used to test an ATX power supply outside of a computer. It essentially tricks the power supply into thinking it's connected to a motherboard and being told to turn on.
Steps:
- Disconnect Power: Ensure the SMPS is completely disconnected from the mains (wall) power outlet.
- Identify the Wires: Locate the 24-pin ATX connector (the largest connector). Find the green wire and any black wire next to it.
- Prepare a Jumper: Use a small piece of insulated wire or, cautiously, a bent paper clip.
- Create the Connection: Carefully insert one end of the wire/paper clip into the connector corresponding to the green wire. Insert the other end into the connector corresponding to the black wire. Make sure the metal of the clip only touches the metal connector inside the plastic connector housing.
- Plug in the SMPS: Plug the SMPS into the mains power outlet.
- Observe the Fan: The SMPS fan should start spinning, indicating that the power supply is now ON. If the fan doesn't spin, double-check the connection and try again. If it still doesn't work, the SMPS may be faulty.
Important Considerations:
- Safety First: Always unplug the power supply before making any connections.
- No Load: While the SMPS is running, it's operating without a typical load. While this is acceptable for testing, running it for extended periods unloaded might not be ideal for the PSU's lifespan. Consider connecting a power resistor as a dummy load.
- Voltage Checks: Once the SMPS is running, you can use a multimeter to check the voltages on the various connectors (e.g., 3.3V, 5V, 12V) to ensure they are within acceptable ranges. Refer to the SMPS documentation or ATX specifications for the correct values.
Why Do This?
- Troubleshooting: To determine if the power supply is the source of a problem in a computer or other electronic device.
- Testing: To verify that a new or repaired power supply is functioning correctly.
- Custom Projects: To use an ATX power supply to power other electronic projects that require specific voltages.
By following these steps and safety precautions, you can safely test and utilize an SMPS outside of its intended environment.
