07-13-2012 04:48 PM
So my t420s has this weird, stati-like noise that seems to come from the fan. No, it is not the fan (actually I don't mind the fan at all) It isn't the speakers either.
It seems to happen when I'm using the battery and as soon as I plug it in, the noise goes away. It's pretty strange. This isn't the first time I hear this on a t420's. Does enyone have this issue? Is it bad? Should I be worried?
Solved! Go to Solution.
07-16-2012 03:39 AM
09-26-2012 06:37 PM
It sounds like coil whine, or "CPU whine". Does it sound anything like any of these clips?: http://soundcloud.com/discostrings/sets/t420s-coil-whine
There's another thread going on about it over here. I'm waiting for a reply on the best way to resolve the issue with my T420s with this problem. I don't just want to send it in and end up with someone unfamiliar with the issue who just replaces the motherboard, doesn't check the new one, the new one has the same problem, and neither I nor Lenovo are any better off...