[ale] OT: Question regarding whining monitors (for you EEs out there)

[hbbs at comcast.net (Jeff Hubbs)]

Bad flyback transformer?

On Sun, 2005-03-20 at 23:16 -0500, John Wells wrote:
> Guys,
> 
> I have an Apple eMac that has monitor issues (see older threads in which 
> I've mentioned it).  Most of the the time everything works fine, but if 
> I leave it on for 15+ minutes or so on average, the monitor begins to 
> emit a high-pitched whine that seems to grow in intensity over time...to 
> the point that I'd rather jab an ice pick into my temple than to sit at 
> it for very long.
> 
> I'm preparing to take it to the only authorized support center here in 
> Greensboro...CompUSA, but want to be fully wearing my BS armor before 
> going in.  In my experience, these guys will throw out any random 
> explanation, assuming you're a DAU who doesn't know better.
> 
> Can someone explain what might be the likely cause of this?  I've seen 
> older monitors do this in the past, but don't really have a handle on 
> what causes it.
> 
> Thanks for any information you can provide.
> 
> John
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