I think that you were trying to respond to the thread vide http://www.proz.com/topic/17483.
It will be better to copy paste your post in that thread in order to keep continuity.
Nigel Skipper wrote:
Both Tayfun and Jerzy have valid points. If your monitor has built-in speakers. then it could well be responding to the influence of radio waves form the police communication system, or a cellphone left nearby. If not, then the usual cause of buzzing from monitors is vibration in the high voltage transformer. It doesn't mean that the monitor will necessarily break down within the next few weeks, but repair (unless it's a really high quality graphics monitor costing over $1000) is not really on the cards.
You can buy a good 19" CRT monitor for around $200 and any service shop would probably charge you half of that, just to look at your monitor.
I also agree with Jerzy concerning LCD/TFT monitors. I changed my old 17" CRT display for a Samsung-based 19" TFT just before Christmas (end of the tax year you know . . ) and I can say that it has made a vast improvement to my working environment. The dreaded flickers are no more and I can finish a long days work without rubbing sore eyes. It also gives me a far better workspace, since the screen take a lot less depth, and using 1280x1024 resolution I can have a full A4 document open and have all my tools available as well.
So, if the buzzing doesn't go away with the officers, invest around $600 in a new, large, TFT screen.