Lightning strikes can easily overwhelm the protections built into PSUs.
I wouldn't trust any component which comes from a machine damaged by electrical surge. Anything could be broken, or dangling off the edge of breaking, even if it initially appears to be working fine. I don't like bad hardware, I don't like compromised hardware, once it escapes into other machinery there could be all sorts of time-wasting troubleshooting frustrations.
If lightning damages your electricals a lot then you should really invest in a battery UPS, maybe also an isolation transformer. And maybe install a hefty thyristor or arrester or something into your main electrical panel, lol. And tie a knot into each power cord (no substitute for real surge protection, but hey it can sometimes help and it's totally free).
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[/Korth]