Sadly, the original monitor did not last much longer than the warranty. I don't think I got my first LCD monitor until around year 2000 or later. I still have it though and it probably still works.
Yes, now you mention it. I remember, many of them only did last a few years and the picture deteriorated, after a few years as well (even if it still worked). I'm NOT 100% sure, as it is a distant memory, now.
Like you. I did have a 486 system at one point, but (unfortunately, as I would like to have it now, as a legacy system) I sold the motherboard, and replaced it with a Cyrix cpu based motherboard, or whatever the upgrades were at the time.
The monitors from that time point, were often really small, and the picture quality was often not that great. So I guess you are not missing too much.