Hello Im new here and Im very happy for that .Please can you can help me? I have an old trigem monitor . suddenly the screen picture moves in all direction (jumpy,wavy). some people diagnose it as electrical interferences, but no electrical device beside my COMPUTER. can you help me to no the exact reason please. also Iwant to know about the function of the monitor menu buttons and  all choices of these buttons.
Many Thanks
Mona ramziSometimes magnets can mess up a monitor too, but as this is an older monitor, I am thinking it is just going out on you.  Typically older monitors will start to dim and get fuzzy after a while, sometimes they take a while to TURN on, sometimes the color fades, and sometimes the picture can get goofy.

I hate to say it, but I would suggest looking into a replacement.  If you are using an older monitor, people are basically giving them away right now, you can probably find a used old monitor for a few DOLLARS if you check around.  See if any friends or neighbors might know where to locate one, or check a thrift store.  If you'd like something a little nicer, this can be the perfect excuse to upgrade.  I think a NORMAL 19" flat-screen monitor goes for about $99 now, and it would be a good investment as you would then be able to use it on any other computers you may buy down the road.Just to ensure that your issue is actually the monitor and NOT the graphics card for instance. Try the monitor on another computer . If it behaves the same way then it is most likely the monitor. When you say old i assume it is a CRT monitor? truenorthTry degausing the monitor with the menu provided in front. After you can test it on a different SYSTEM. And if all do not prevail, just buy a new one.