I just made my first electronics project, a modded atx psu into a lab bench test psu. And I ran into an issue. First of all when i plug my psu the red led doesn't light up which it should. When I flip the switch the green led turns on and the fan. When I measure voltages with my multimeter everything is fine, but when i plug my fan in the 12v socket the psu turns off. And later I found out that the psu turns off by itself after 20 seconds with no additional load. Can someone provide me the answer?
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