Which star 4000 has the most degradation?

[wstarcraze]

Could that degradation be caused by a large amount of dirt and dust that could have built up inside the unit over time?

Well if that is the problem they should just open up the unit and use a hose vac to suck all the dirt and dust out of the unit.

[Zach]

I misread what you stated, but it's not really dirt, but rather just bit-rot that just builds up in the unit from continual use and age.

[wstarcraze]

Here is another one. This one coming from Carrington, North Dakota.

http://www.youtube.com/watch?v=_Ciqj64JFnY

[microg]

I misread what you stated, but it's not really dirt, but rather just bit-rot that just builds up in the unit from continual use and age.

If I had to make a guess, the first thing I'd check for are bulging/leaking capacitors.  Sometimes the electrolyte inside a capacitor goes bad and tries to push its way upward and eventually starts leaking through the top. 

At work, I replaced two video cards not too long ago in some high end Dell's whose capacitors did exactly that.

Just a theory anyway as I've never had the opportunity to see a Star 4000 up close.