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PSU HELP cooler master V750S not turning on.

Last response: in Components
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March 22, 2014 2:25:02 PM

Its plugged in to the mother board but when I power on the psu nothing happens. But If I press the mother board power on button (only if psu 'on') I hear a click in the psu. is the psu faulty or am I just doing something wrong? I have asrock z87 extreme4 and I have connected the 20+4 pin to mono and the 4+4 pin. And I have conneced 6+2 pins(2) to gpu. And my hdd is connected.

More about : psu cooler master v750s turning

a c 2353 ) Power supply
a c 1383 V Motherboard
March 22, 2014 2:28:17 PM

Sounds like a faulty PSU , that power supply isn't very good.
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March 22, 2014 3:08:29 PM

When I do the pin trick it works.
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Best solution

a c 1204 ) Power supply
a c 223 V Motherboard
March 22, 2014 3:35:44 PM

manu354 said:
When I do the pin trick it works.


What you're doing is simulating the motherboard sending the PS_ON# or Power On signal to the PSU. The motherboard will only send out this signal to the PSU if it has determined that all of the PSU's voltages are within ATX12V specs.

Since the motherboard isn't sending this PS_ON# or Power On signal to the PSU then there must be a problem with the PSU.

Borrow and try a different/better PSU to troubleshoot with.
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