Hi Kegman and Welcome to the PCguide Forums.
From the description of your problem, and the fact that the monitor is 4 years old, I'd guess that it's the monitor going home. Can you try the monitor on another machine, or another monitor on yours to confirm? That would be the easiest way to check before spending money on it. Repairs to monitors are rarely cost-effective unhappily, especially if as in your case it is probably the tube going. Sorry
If man could be crossed with the cat, it would improve the man, but disimprove the cat.
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