In a message dated 11/6/99 2:09:54 PM Central Standard Time,
elektrikman@DYNAMITEMAIL.COM writes:

> hey guys i have a Sony 15" monitor with built in speakers and mic.  Lately,
> every now and then it starts to make this high pitched squeeling noise..NOT
> out of the speakers, but internally somewhere.  If i unplug or press the
mute
> button on the speakers, the sound still continues, and it doesnt sound like
> its comming from the speakers.  The microphone is NOT CONNected so its not
> from that either... any ideas?
>

  Yeah, it's your flyback transformer. If it's not doing it all the time, it
just may be a bit loose on the circuit board. If you're brave enough, pop the
cover off and squirt a bit of silicone around the base of the it. (It's a
black rectangular box with a red or black HV wire coming straight out of the
top and connects to the CRT). You can also run the monitor and wiggle the
transformer before gooping it up. Don't touch anything else if you're not
familiar with the spots where HV can be. Otherwise send it for service.
  If it's doing it all the time, there are loose windings around the core
internally. If you can stand it (yeah right), you can let it go till it fails.

Aaron