How to check the unit performance

You will need
  • - Power Supply;
  • - voltmeter / multimeter.
Perform a quick checkblockpower supply without connection to devices and equipment. Take his 20-pin connector, find the green wire and connect it to any black wire. If a fan started spinning on the unit, it means that the power supply is generally operational. For more detailed testing, use the following steps.
Find a sticker on the block that holds information about the permissible values ​​of load currents on the channels, usually it is located on the side wall. Next, perform a voltage test on each channel using a multimeter to determineperformanceblock, or rather, its individual elements. Also information about the "ideal" indicators and possible tolerances can be found on the official website of the manufacturer.
Connect the power supply in series with a standard incandescent lamp to avoid “fireworks”.Turn on the unit in the network, measure the voltage on the ninth contact of the motherboard connector relative to the common wire. If all readings are valid, connect the power supply unit directly. Turn on the block. To do this, close the 14 and 15 connector motherboard.
Load the unit to measure and evaluateperformanceBP. To do this, you must apply a load on it, at least half the maximum current. In the case of a 250W unit, it will be 11 amps. As a load, use powerful wire resistors, for example, sew.
But be careful, this load can be fatal for most of the cheap blocks. Therefore, approximate the load to the lower limit of the current value. Consider also that power dissipates on a resistor. For + 12V power is approximately 20-25W. Choose the load resistors from these considerations.
Connect the load and measure the readings to perform a test of the power supply of the power supply unit; if the voltage values ​​correspond to those of the plate, the unit is suitable for operation.

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