KZG caps failed on a NOS motherboard - never been used...

[Lostdotfish]

This is a new one on me. I picked up a new old stock DFI 865PE Infinity board recently. It's completely new, never used. While inspecting it I noticed some unexpected bulging caps...

All of the 6.3v 1500uf caps had failed in place, despite the board never seeing use and being stored sensibly. I pulled the 16v caps that are the same series as a precaution and will replace them all.

[stj]

some types of cap will do that, they generate gas as they breakdown and blow the top or base open.
another thing to watch for, if a cap has not been powered for many years it can on rare ocasions explode when you power it up.
i have had that happen, a sheet of acrylic over the board or safety glasses is a good thing to have.

on the bright side, you can do a polymer upgrade now.
just make sure you match the diameter before ordering.

[Lostdotfish]

some types of cap will do that, they generate gas as they breakdown and blow the top or base open.
another thing to watch for, if a cap has not been powered for many years it can on rare ocasions explode when you power it up.
i have had that happen, a sheet of acrylic over the board or safety glasses is a good thing to have.

on the bright side, you can do a polymer upgrade now.
just make sure you match the diameter before ordering.

Yep, I have some 8mm and 10mm Chemi-Con polymers somewhere that will suit. The irony of using Chemi-Con for this repair is not lost on me...