I use an old Magnavox monitor I’ve had since 1991. It’s on day/night, 24 hours. It works perfect and it’s display is perfect.
Everyone I know has replaced a monitor at least once, most have replaced one more than once. I’ve been told that 11 years for a monitor that’s on 24/7 is pretty good. Is it?
My ma has an RCA color t.v. that she got in 1983, and it’s on about 16 hours a day. Has never had a single repair and the picture is very sharp.
It depends on the specific species. The Komodo Dragon, which is the largest of all monitors, can live upwards of 50 years, whereas your smaller monitors, like the Nile or Salvadori Monitor, would be more like 20 years in captivity. Shorter life expectancies in the wild, of course…
What? What?
LMAO RickJay
I have an IBM 8513 monitor that still works beautifully, despite even being left out in the rain once, by my roommate. I bought it used in 1994, so it’s at least early 90s as well.
On the other hand, I’ve had 2 SVGA monitors go bad.
Yeah, those old tvs are sharp, but the picture can’t compare the the new tvs & the weight of the old tvs is a lot more due to tubes & they don’t have closed captions…or other features 
Is your computer monitor CRT or LCD? I exchange about every three years on my crt monitors, but Im changing to LCD as they use a lot less electricity.
I have a cheapo Proview that I bought in 93 that is still going strong, which kind of suprises me since I have heard that they are C-R-A-P.
Not as suprisingly, my 19" KDS I bought in 98 is as good as new.
Most commercial electronics are designed for approximately an 8 to 10 year life span under “normal” use. 11 years is pretty good for a monitor.
There are a couple of different things that affect long term reliability. One is thermal stress, which is caused by turning the monitor off and on and having the different materials expand and contract at different rates (which eventually causes things to break). Leaving the monitor on 24/7 minimizes this effect. A lot of environmental things come into play as well, especially power spikes, brownouts, and long term heat buildup. These are the exact opposite in that the more you leave the monitor on the worse they are. Things also tend to wear out the more you use them, which is even true for solid state devices (like monitor electronics). Leaving your monitor on 24/7 may have contributed to its long life, but because of all the other things involved it has drastically shortened the life of some of mine, mostly because we have a lot of brownouts and power spikes around here.