PSU replacement
PSU replacement
If your old psu starts working, what makes you believe you should replace it? Ignore the "paper clip" test—it’s completely pointless. It won’t confirm whether your psu is functioning properly. Even inexpensive testers costing around $10 can’t provide the right information about its operation. A proper evaluation requires a much more expensive and thorough approach, which costs around $5000. The only sensible way to assess it is by installing and running it yourself.