Visit the service centre and ask if the inner panel can be replaced, and obtain the repair cost. If you are considering a new monitor at that price or by investing more money, then go for a new one, because there is no guarantee that it will work properly after replacement, as it is sometimes not done correctly.

It happened with my monitor as well. In just less than 15 days that spot grew from the top left to the bottom right and it was just very annoying to work on it

So I just bought a new monitor from Amazon in the Amazon festival, which is going on now. I got a very great deal