I have a 17" Sony Trinitron monitor that's about 4 years old. Lately the picture has been getting darker for no apparant reason. Sometimes it will start out ok but get darker as I use it, but sometimes I turn it on in the morning and it's noticably darker then it should be. It's getting to the point where even turning the brightness up as high as it goes still isn't letting me see all the details in my pictures. Does this mean the thing is about to die? I hope not, it's a nice monitor and it's served me well, and I can't really afford a new one at the moment...