I've been a Viewsonic user for years . Their CRT's were some of the best but they have not had great longevity with their LCD units.
I have three of their 17" Viewsionics and all have been relaced under warranty , one twice, for the same power supply issue.
I have 1 Optiquest that is still going strong after 3 years , Optiquest is "supposed" to be the higher end Viewsonic line.

VS is very unfriendly to warranty claims. I had a real problem when the "repaired" 17" LCD died after 14 days and they dicked around about repairing it, told me it was damaged in shipping, etc. Finally a nastygram to the Pres. of VS got me a refurb that worked.

Trouble is ALL the LCD units are sourced from 3 companies in China and 99% of the troubles are the power supplies or main boards. It appears that they cannot take the heat of constant use but then a lot of folks do not turn their screens off at all, they just leave the CPU running all the time.

At work I have to leave my HP CPU running 24/7 but turn off the LCD, we have kept a watch and this seems to lengthen the life by 100% to 5 to 6 years (std CPU is a Dell as are the screens but due to huge AutoCad files and load I use a HP monster.)

For our 24" LCD units we have considered installing an aux fan venting the power supply area, IT is looking into it now. We had 2 new Dell 24's die quick which could mean Dell is back to crap suppliers again as a cost measure.

I know they did not support their LCD TV line at all as they suffered massive power supply issues and Dell dropped the whole line and screwed all their customers.

Typical Dell!