When I went to turn on my monitor, it was squealing, so a quick googleizm of the model # found this..

"Sony CPD-1604S monitor has no picture, unit makes humming noise. Horizontal output ok.
Try checking/replacing capacitor C911 = 10 uF, in the power supply."

I knew that I would have to do something like this... *sigh*

What should I check for exactly? And if I have to replace it, 1) where can I steal.. err appropraite one from? and 2) how do I replace it?

Thanks,
C++Freak

Hi

Dunno the exact model Sony monitor, but i happen to
repair televisions (and some monitors) for a living

Before checking and replacing anything; be careful !!
Some of the large capacitors in the main supply
can kill ya!! They hold power for a while even after
you switched the thing off.
For replacing things properly; desolder the cap.
buy a new one (they are really cheap) and resolder
it. Watch the polarity of the cap. So you need to know
how to solder right, maybe someone can do that for you.

Normally C911 is the location, so look for that on your
print. besides the 10uF the maximum voltage the cap.
can handle is written on that cap also. (important)
The power supply holds mostly the largest cap. in
the whole area, to narrow down your search a bit.
Like 100uF/350V or 220uF/350V, or uses two similar
ones together.

Aaand it maybe another fault, like a shortcircuit in a
diode a faulty horizontal output or another crappy
capacitor. It can cause the squealing or hickups also.
Without measuring things it is a bit of a guess.

Anyways good luck and don't get yourself turnend
into a something rather welldone steak

hmmm i forgot something; your monitor squeals, but
does it still have a picture ??

I've got an ohmeter, I should really learn how to use it..

Thanks for the help, my mother and father know how to solder, and mom has replaced a few capacitors in her day..

Also,
Nope, there is no picture

I checked out a parts store online, and they have a large stock of parts for my exact model monitor..

What do I need to measure, and what am I looking for?

Hi

With just an ohmmeter you can't exactly measure a
capacitor (only current leakage, but you need the uF)
unless it is a multimeter whith this feature on it.
In my work i use a cap meter just to measure them.
But since you have already one tip considering C911
just replace it on forehand. They should cost something
like a $ 0,30 depending on what cap/voltage
Note; crappy caps most suffer from electrolytic leakage,
by touching them (soldering pad that is ,not the casing)
whith the (de)soldering iron you can smell them (the damps
can cause cancer some critics say)
They smell like urine really

From my experience (which is not as much as mrGee since I don't repair hardware for a living, just a hobby), when a capacitor is squealing, it's got a leak and you can usually see the hole. When you find C911, you may be able to tell by visual inspection that it's really dead (but you cannot tell that it is good by visual inspection, see?). But, as mrGee said, it's a cheap enough fix that it's really worth replacing anyway.
I would also reiterate the warning about messing with this without being sure you've discharged the capacitors on the monitor, this thing passes some pretty high current, and it can KILL you if you aren't careful. Unplug it and leave it unplugged for a while to let the capacitors discharge.