Interesting development, I didn't notice this before, and it could be new, but this monitor hums quite a bit louder than the other one. It's not hiss, but like a power supply hum. And it also just started to make a crackling noise every few seconds, but it only lasted about a minute and it has since stopped. Looks like I'll be returning it, but now I don't know what to do about the other one... They are decent, but nothing special and fatiguing as hell.