The CCFL lamp that I installed in my 500W power supply burned out. Not surprising since it's always on when the system is powered on. I can easily replace it, I do have a spare. I could also add an on/off switch for the lamp- maybe replace that useless 110/220 switch on the back (wire it to 110V only). But when I removed the power supply I saw that the cool blue finish has faded over the years!
Maybe it's time to upgrade the power supply. Get a larger one while I'm at it. I found an Ultra X4 750 watt power supply on eBay for a decent price. And by covering it with my vinyl foil it will be the same color as my case!
Extra connectors for SATA with 3.1V, and PCI-E 6 and 8 pin connectors. (Old SATA plugs had only 5V and 12V, which currently is rarely an issue.)
Apply the foil, carefully trim and fold the edges over. And then there all those tiny holes to cut out- 'It's déjà vu all over again' as coach Yogi Berra once said!