My eMac Gives Off A High Pitched Sound?

[SamIchi]

Whenever the screen goes to sleep, a high pitched sound starts. It's annoying, not annoying to the point where I can't stand it, but it's annoying. I've had TV's that did this, and I would usually give it a smack and it would go away, but I'm not goin' to be smackin' my eMac anytime soon. Anyone know what this is, and how I can fix it?

[t300]

How long have you had it? Do you have Applecare?

[dotnina]

Sorry if this sounds obvious, but ...

Is the eMac near something that could be causing a vibration (and thus the sound)? Also, some people complain about a chirp or squeak from Powerbooks when the hard disk is spinning ... might this be it?

Does the sound persist when the computer is asleep?

[tech4all]

I know you mentioned this, but a TV in our house does a similar thing sometimes when it's on. I hear this high-pitch sound, but it can sometimes get really loud. Might have something to do with the CRT.

[JFreak]

if you turn the cpu power to reduced, does the sound go away? if so, it is normal, all G4 cpu's keep a little noise when stressed.

[SamIchi]

Nope, it's not vibratin' against somethin'. I 'm pretty sure it's something internal. I don't have applecare either. It's a constant sound. If you've heard it before from other electronics you would know what I mean.

How do I reduce the CPU power? I don't see it under any settings. I usually keep my comp on all the time. I shut it off last night, and the noise dissapeared in the morning, but when I got back home tonight the sound was back.... I don't know what to do. :confused: