Well I had my iMac 17 g5 sent out to me and when I tried to turn it on, nothing happened. I took the back cover off and led 1 lit, while led 2 did not. I checked the capacitors on the logic board and they all seem fine, although when I opened the power supply I found one capacitor bulged at the top and a red pasty material had seeped out. My question is can I replace that one capacitor, or have the power supply repaired rather than invest any money into this aging computer? The replacement power supply units are too expensive for me to justify putting into a free computer.