A mate gave me one of his old PCs, he said that he was having problems with the power button, so he had jumpered the green to ground on the PSU to make it work. When I finally got to it, it no longer seems to boot.
Anyway, I stripped out the motherboard and PSU from the case, made a few basic tests, find the power button is fine, and all voltages seem to be ok-ish (3.30, 5.07, 12.20) except for the +5 SB, which is around 4.06V.
The motherboard is GA-Z97P-D3, and seems to boot ok with another PSU, but the original PSU and the motherboard have the 8-pin CPU power connector. When I got it to boot with another PSU, that PSU only has a 4-pin CPU connector. Does the motherboard need to have an 8-pin connector? Maybe if overclocking? He might have been doing that, I need to ask him. The motherboard manual doesn't mention anything in this regard.
So getting back to the +5V SB, are these power supplies worth delving into to try and repair? And is the 4-odd volts on that likely to be why it's not booting, is that too low?
Anyway, I stripped out the motherboard and PSU from the case, made a few basic tests, find the power button is fine, and all voltages seem to be ok-ish (3.30, 5.07, 12.20) except for the +5 SB, which is around 4.06V.
The motherboard is GA-Z97P-D3, and seems to boot ok with another PSU, but the original PSU and the motherboard have the 8-pin CPU power connector. When I got it to boot with another PSU, that PSU only has a 4-pin CPU connector. Does the motherboard need to have an 8-pin connector? Maybe if overclocking? He might have been doing that, I need to ask him. The motherboard manual doesn't mention anything in this regard.
So getting back to the +5V SB, are these power supplies worth delving into to try and repair? And is the 4-odd volts on that likely to be why it's not booting, is that too low?
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