The computer power supply says "internal high voltage, no turning on". Can it be disassembled?

The computer power supply says "high voltage inside, no turning on". It is not recommended to turn it on, but it can still be turned on when there is a queue, such as cleaning the power supply dust.

It should be noted that the following points should be noted when opening the power housing:

1, try to run without electricity. If it needs to be powered on for maintenance, please be sure not to touch the internal circuit of the power supply, especially the primary part of the power supply.

2. When moving or grabbing the power supply, only grab the shell, not the internal original directly, so as not to damage the internal components.

3. When cleaning dust, you can use a hair dryer and anhydrous alcohol. Remember not to use water.

4. Do not leave metal objects inside the power supply, so as not to damage the internal circuit when working.