As evidenced by a failure to boot at all, no video output, a stopped fan and particularly with Mikeyboy's diagnostic advice, I found myself with a power supply that suffered from the somewhat typical problem of being a volt low on the yellow wires to the motherboard (2.3 instead of 3.3 volts). After removing the PS board I looked closely to see if there was any obvious cause of the failure - and there was!
The capacitor located just inboard of the coil had a very small hole in the top right at the intersection of the X scored on the top. That scored X is there to provide a weak spot for a cap to pop when it fails and it worked as designed. That particular cap is a 2200mfd 10v electrolytic. Basic soldering skills are all that's required to change the cap which is available at any well stocked electronics shop (cost $2). Use some desoldering wick to remove the bad cap and solder in the new one being sure to observe polarity - the negative side to the shaded hole - and you're good to go.
The capacitor located just inboard of the coil had a very small hole in the top right at the intersection of the X scored on the top. That scored X is there to provide a weak spot for a cap to pop when it fails and it worked as designed. That particular cap is a 2200mfd 10v electrolytic. Basic soldering skills are all that's required to change the cap which is available at any well stocked electronics shop (cost $2). Use some desoldering wick to remove the bad cap and solder in the new one being sure to observe polarity - the negative side to the shaded hole - and you're good to go.
