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Why is my power supply no voltage out?

my power supply model: LC-A300ATX have no volt and current out?


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Is the PSU connected to the motherboard?

The PSU will only turn on if there is an earth on the PS_ON lead coming from the motherboard.

Try the following to prove if the problem is in the PSU or the motherboard.

Here is a link that shows how to turn on a PSU that is not connected to a motherboard to test the various supply voltages.

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Very many thanks


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