OT- power problem?

[Randallw]

For several weeks now I have noticed that the lights in my power supply light up after it turns off. I had another problem I think I fixed but this problem is that when I turn off my computer it stops but then 5-10 seconds later the lights in my power supply flash on and off. I think it's power running because the fans spin in unison. It stops after awhile however I just came to use my computer and it was off but the power supply was flashing on and off continuously. Does anyone know if it might be a power supply problem. I have googled for help on the topic "power supply flashing after turn off" and similar and I find nothing relevant except that power supplies occasionally fail and is easily fixed with a new one. For all I know the flashing is normal and I only notice now because I was investigating my other problem. I have a surge protector.