I have a lot of low voltage lighting in my house and the transformers that drive the lighting go bad frequently. It seems like I've replaced 2 or 3 but they always fail within the first month or so of me getting them and I get them replaced under warranty. I've yet to have one fail after several months.
Based on this, I wonder if you have an electrical problem in your own homes wiring. Bad power can damage electrical and electronic devices. Incandesent lights are more tolerant of bad power, but can still fail. You may want to have an electrician verify that your home is wired OK, and that there is not a failure somewhere in your house wiring. Some things such as a ground fault, or an improperly wired outlet can cause trouble with electronic devices. The same is true if the line voltage is incorrect. Correct voltage should be between 110 and 123 for the USA, 210 to 240V in Europe, and in the 100V range for Japan. Additionally, you may want to pick up an outlet tester and see if the red problem light comes on.
When you get your new chassis, I suggest you considering installing a surge protector, or even consider installing a UPS system on it. You may also want to try installing an Isolation Transformer on that monitor. These steps may help reduce the potential for bad power to the monitor.