After switching off the monitor, there's a single crack after a while. I wonder where exactly it comes from.
I know that this is normal and not an indicator of being defect. This sound is also not related to a specific type of monitor. I've heard this sound from my CRT as well as from my TFT.
I guess it possibly has to do with cooling down. I found a lot of statements that second this thought but there's no reliable source confirming this theory though.
However, an explanation that only says that it has to do with the cooling process is not sufficient at all. I'm interested in what exactly makes this sound? Is it, for example, a capacitor which has fully unloaded (if this is the proper term). I really haven't the slightest inkling what exactly can make this crack noise.