Cooler master psu dead

I have a 1050W psu from cooler master it is 3-4 years old, I have a 3-4 ye old gpu 3070ti and the rest of the pc is new, motherboard ram water cooling and cpu. I have two questions:

1. Should I try repairing the psu which will cost less or should I buy a new one but I’ll get a weaker one cuz I’m on a tight budget

2. Is it possible that other parts have been damaged and which ones, I’m not an expert but the pc turned off out of nowhere, it was plugged into the extension cable where I have my mac and my monitor plugged in too, I took out the psu and it seems to be dead… I don’t think there was a power surge because there is no signs of damage on other devices like mac or the monitor but idk I’m not an expert.