Viewsonic P815 problem

Thought I'd try here to see if anyone knows anything about monitors. I picked up a couple of 21" monitors yesterday from the old assets of 3DFX (proceeds to benefit Red Cross) from my company. I got them home and one works fairly well except for a bit of moire pattern, the other though starts up and will not shift out of degauss mode and eventually loses the signal. Anybody know what is wrong with it and if it can be fixed? I ellimated all other variable so I know it is the monitor.

Help is appreciated...

Carl