The capacitors in the previous update can handle max 40V. I didn’t think it was enough because the power supply delivers 36V. Therefore I bought 4 new capacitors of 4700µF 50V and mounted them on a pcb:
Build in and connected:
I’ve cut the back of an old pc power supply to close the back of the case. Now I have a power connector and fan to at once :).
Dutch 
