Just on another note, if/when you replace psu, remember that any modular cables, cables plugged into the power supply must all be replaced. Not sure if your psu is modular or not/semi modular, but as cable reference, modular psu's can have plug-able (cables not attached to the unit itself) ATX 24pin, CPU 12v (4 or 8pin), Sata (Data cables are fine). Any power related cable connecting from psu to motherboard/drives and also graphics card's PCIe, replace with supplied cables.
Reason being is pinouts aren't unified across brands so positive/negative pins can be in different spots and using existing cables already layed out in the case and swapping psu over for convenience will be a costly mistake.