Weird Spark that came from the PSU?

[qqrakka]

There was a massive power outage in my entire city, so I unplugged my PC from the surge protector, and also turned off the PSU behind the case for extra measure, when the power came back on, I plugged my PC back in the surge protector, but when I clicked the ON button on my power supply, it emitted a light, like a spark, except with no sound.
I'm using the computer just fine right now, nothing is behaving weirdly, and the PSU is working like it's supposed to, I'm just wondering if I should be careful or possibly even RMA it?

The power supply in question is a Cooler Master MasterWatt 650, it's powering a 226 watt system.

This was the only power supply available, so that's why I got it.
Thank you in advance!

 

[Dark Lord of Tech]

If everything is running fine , no need to RMA. If it happens again , then proceed with a return.

 

[qqrakka]

If everything is running fine , no need to RMA. If it happens again , then proceed with a return.

Thank you for your help!

 

[Dark Lord of Tech]

Glad to assist!