When I am using my PC, I tend to get high pitched noise emanating from the monitor. What is causing this and is there anything that I can do about it? The monitor is a fairly ordinary CTX model about three years old. It's driving me to distraction! Mansoor Baig
The best guide I know to monitor problems is the one published by Samuel M. Goldwasser as a RepairFAQ. In partcular, have a look at the section called High pitched whine or squeal from monitor with no other symptoms. There's also a Buzzing monitor section just before that.
The main things you can do are to check the cables (unplug them and then plug them in again) to make sure the contacts are good, and to change the scan rate. As the FAQ says:
Confirm that the horizontal scan rate being used by the video card is well within the range supported by the monitor. If it isn't, change it to be a one that is -- in addition to possible whining, this is stressful on the deflection and power supply and may result in an expensive repair in a very short time. Even if the scan rate is supposed to be fine, changing it slightly (e.g., 5 percent) might help just because it shifts the deflection frequency away from a mechanical resonance. However, this may not be a long term solution.
I generally don't recommend messing about with the inside of a monitor as this can prove fatal.
A local repair shop might be able to find and replace a defective part, if that is causing the hum, but the cost may be high relative to the value of the monitor.
