Hi!
Good & very bad news!
It works in standalone mode and I was able to upgrade the CCR to 7.6beta8 without any issues.
Setup: external 12V PSU connected to a PicoPSU 12V 80W, which again connects with a molex 4pin to a PCIe 1X to 16X adapter. The PicoPSU also connects to an ATX breakout board. That connection is just there to force the PicoPSU to switch on and to be able to measure the correct voltages (a piece of wire could have been used as well to short PIN14 to any of the COMs).
I took a photo of it, see attachment.
Here comes the really bad part:
Then while configuring it for about 10mins, my 12V PSU started to make strange noises and I jumped up to turn the whole thing off.
CCR2004-1G-2XS-PCIe.jpg
As I reached for the cable, one of the capacitors (Electrolytic of course) got blown apart with a loud bang.
With it went my CCR.
If I plug it into my original mini ITX setup, the blowers dont spin up. Strangely my switch negotiates a 100Mbit/s connection with it, but no packets are flowing.
I will give it a try to repair the CCR, I hope I can do it, but it won´t be easy without a detailed schematic.
Update: I measured FU2.
I hope its just the blown fuse FU2, I could not replace it yet, as I'll have to order that first.
mtCRS-PCI-blown-fuse.jpg
The lessons I learned:
-don´t trust old PSUs (both the 12V external PSU and the PicoPSU were in service for 6-7 years beforehand)
-even less trust should be given to a chineese cheap (14EUR) PCIe break out board, I won´t use any in the future
-it can definitely be done and it would be a great solution
-happy that MT placed a fuse on it! sad, that the Chinese didn´t care to put one on the PCIe Extender
W
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