Service Action to Prevent PSU Failures in ReadyNAS NV/NV+

It appears my ReadyNas NV power supply is on it's last leg. I powered it down after probably a good 2 years without shutting it down and decided to give it a good cleaning job (get the dust out and stuff). I had noticed what sounded like a fan starting to fail so it gave me an opportunity to explore. I initially thought it was the main fan but it ended up being the power supply fan. I took the cover off the power supply to check out the fan and there they were, three bulging, leaking caps! Obviously I bought this unit back in 2006 (Infrant branded) so it's way out of warranty and not included in the power supply service advisory.

My unit is still up and functioning for now, but I was debating if I should go ahead and replace the 3 bad caps and throw in a new fan in the current power supply, or buy a suitable replacement (and make the appropriate wiring changes). If I get the PS back in good shape I'm thinking about throwing in 4 new 2TB drives to give it new life and purpose as my backup unit for my RN314.

Thanks!