I've had my new PSU (CX550M) for around 4-5 months now roughly, and I noticed that every so often there would be a very static-y electric buzz sound coming from it. I left it alone thinking it was coil whine, but recently I've noticed that whenever it's making that sound, my electric fan would simultaneously become weaker then return to normal once the sound was gone (it shares the same socket as the extension cord where my PSU is hooked up). Just recently, my lights flickered at the same time the sound was going off (along with the electric fan getting weaker). I wanted to ask what sort of problem is going on with my PSU and if it's a hazard (I am planning to RMA it, but I also use my PC for school and other important tasks).