Apple Studio Display

Nothing to do with calibration, it's obviously a hardware problem.

Doesn't necessarily mean your monitor is "dying", but I wouldn't move it around much more...

 

the first thing you should check is the power supply. are you using a battery backup? the battery backup will give you a "clean" power source, if you are just plugging into the wall. you may be getting interference through the powersource. you can also trying changing wall sockets, but you sockets need to be on a different circuts. so you may have to try serveral.

the next thing you should check is to make sure you cable isn't frayed and is plugged in snuggley. sometimes a frayed cable will cause flickers because it broken just enough to cause a flicker, but not enough to loose the picture. might move around the monitor cable a bit too point out a bad cable. alot of the time these problems show themselves when you move a monitor because the cable moves.

 

Assuming this is a CRT, if not, ignore....

Moving CRTs around a lot is not a good idea. The components inside are extrememly delicate and fragile, and movement can lead to problems. The CRT in my old iMac died because I constantly moved it around.

You could also try getting a degaussing coil. If the damage has been caused by a magnetic field, this should fix it. But, if something is loose or misaligned inside, there's really nothing that can be done.