My church had a fairly new Dell 2300 MP DLP Projector that had died. I came across a video on YouTube that said this one capacitor in the power supply was the problem. Here is a picture of the old 22uF capacitor to the left of the trensformer.
The new capacitor is a bit tricky to install. There are surface mount components close to it on the bottom side. I decided to replace the capacitor on the top side of the circuit board.
Here is a picture of the projector now that it is working. Just a little more assembly to do.