When attempting to sell a faulty Hiper PSU on Ebay, someone recommended that I try getting a warranty repair done before getting rid. I was unaware at the time that the PSU (their modular 580w) had a 3 year RTB warranty, and that as long as the seal wasn't broken, they would take a look.
After a couple of weeks of waiting, I received an email today saying that the PSU has been replaced and that it's on its way back to me.
So, if anyone wants a decent modular PSU, I'll be selling one on ebay very soon...
Big thanks to "alt_spirit_metro_m3" (ebay id)!