I had a Seasonic FOCUS GX-550W PSU powering a new system I build with a Gigabyte AORUS X570 Elite Wifi Pro motherboard, a Ryzen 5 3600, 64GB DDR4, MSI GeForce GTX 1660 SUPER , 2x M.2 nVME drives and a 5 SSDs (phanteks Eclipse P500A case). This worked beautifully for 2 years, until last week when I heard a loud pop and flames shooting out the PSU. It was connected to a battery-backup / surge protector so I'm not sure why it failed since there was plenty of power headroom already... but it did. And a horrible smell. Ok.. blown caps. So I purchased a new Corsair RM650x. Way more overkill for my system but I wanted room to grow.
When I power the system on, I see an LED (LED is not on the MB... it's on a tiny box I believe was initially intended to light LEDs on the case but was never used).... that LED comes on for half a second and then powers off. I hear a click on the power supply (like a relay switch) as it switched off. 'not sure where do go next? Try again with no drives connected (just nVME boot drive) and one memory stick? Are there some test points on the MB I can probe? I did not measure the voltage on the PSU connectors since they usually require a load to power up? How much of a load? I can put resistor across the terminals and measure the voltage?
Does this mean that the Seasonic PSU blew my motherboard? CPU? Memory? Bad PSU? Any debugging steps would be appreciated.
Thanks
-Ed
When I power the system on, I see an LED (LED is not on the MB... it's on a tiny box I believe was initially intended to light LEDs on the case but was never used).... that LED comes on for half a second and then powers off. I hear a click on the power supply (like a relay switch) as it switched off. 'not sure where do go next? Try again with no drives connected (just nVME boot drive) and one memory stick? Are there some test points on the MB I can probe? I did not measure the voltage on the PSU connectors since they usually require a load to power up? How much of a load? I can put resistor across the terminals and measure the voltage?
Does this mean that the Seasonic PSU blew my motherboard? CPU? Memory? Bad PSU? Any debugging steps would be appreciated.
Thanks
-Ed