Power Supply Painting.

Solution
Well if I was doing the painting it would be a total disassemble and just the bare case to paint. It is not only capacitors to worry about there are heat sinks in there that can loose thermal properties with paint on them.


Be sure you drain all the power from the PSU before you open it.

Unplug it.
Hold the power button for 30 seconds or so.
 


Ah ok right, discharge it, almost forgot about that...