AX850W damaged?

Hello

I had my PSU replaced after the previous one failed (also ax850w, replaced with RMA, thank you Corsair! :)), so i wired it all up, booted it, wrongly set BIOS settings so i relaunched pc with the 4 second rule. Pc turned on, however after 4sec it powered down and turned back on, again after exact same time, turned off and then turned back on and worked fine. With each boot up cycle repeats, however afterwards everything works fine, no problems what so ever (tried to play a game, to increase voltage usage, didn't have any problems)

Have I damage PSU or was it damaged since the begin? So far I am alright with it, as it only slightly expands booting periods, but what I'm afraid that it may destroy other components over time.

I doubt it is a different component, as all of them worked fine, but with my current experience i have learned, that anything can happen.:sigh!: