Hi All,
this cap is faulty, but it is an high quality components made by SAMWHA (Korea) that is one of world leaders in capacitors.
( http://www.samwha.com/templatedirs/guest/acom_capacitors.html ) .SAMWHA is used in several high level hi-fi products and it is weel known for its quality. To be clear it is not a cheap/unknown components.
Moreover this cap is the SAMWHA RD series (not the standard series), that is the high temperature series (105°C) and, moreover, it is rated of 63V when in my PSU it work at only 35V max, and at 40°C max. In these condictions this cap work with very high margins, but also an high quality components can be defective, this is the matter.
BTW, there are several PSU's inside uncheap gears that are not the same quality of the components I use in these kit.
I have sold more than 100 kits and these PSU's work fine without problems. There are several PSU's that work from a year without caps erupted
.
I am going to send you another cap to replace the wrong
this is the cap datasheet for reference http://www.samwha.com/electric/templatedirs/guest/list_pdf2/RD.pdf