My samsung 226bw (analog) monitor will not shut off. It goes black when the power button is pushed but then the analog square comes up and the screen is brought back up to where it was when I hit the button. I'm not good at this but feel like it might be the power button itself. Any advice is appreciated. Thanks!

It is probably the power button itself, or there is something wrong with the power board inside the monitor, the capacitors are probably on their way out, in these monitors cheap capacitors are used and they seem to fail within 2-3 years, these can be replaced by a professional and would probably be cheaper than buying a new one. either way, if the picture on the monitor is OK, you could just switch it off at the socket or wait for it to go into power saving mode.