Zitat von »SimonOcean«

The smell of fried chicken in the evening is a wonderful smell. The smell of fried electronics - anytime of day - is a smell of dread. This is the fate I have just suffered.

Everything working fine

I've been running a cooling system with the following components:
Aquaero 5 LT connected to motherboard using USB 2.0 cable and PSU by Molex power cable
One Aqua Computer D5 Pump with Aquabus interface, connected to the Aquaero by USB 2.0 cable
One Aqua Computer D5 Pump with Aquabus interface, connected to the Aquaero by3 pin Aquabus cable to the "Aquabus High" input
Bank of 3 non-PWM eLoop 120mm fans connected to Aquaero fan group 1 using ModMy Toys splitter
Bank of 2 non-PWM eLoop 120mm fans connected to Aquaero fan group 2 using ModMy Toys splitter

I've had it running okay for a year: fans running typically at 40%; pumps running fine also at 40% power. However as I only have 1 Aquabus input and 2 available internal USB 2.0 motherboard outputs (one of which is taken by the Aquaero and one by one of the D5s) I have not had full control / analysis of pump speeds for both D5 pumps. This is something I have wanted to correct. Also I have a mps flow 400 device which is currently not being used which I also want to connect and have working.

Problem starts

So I bought a SPLITTY9. And I did the following:

1. I moved the jumper from the factory default position to the left most position shows in the picture here:
   
2. I used one of the 4 pin Aquabus cables to connect the Aquaero 5 LT to the "Input" of the SPLITTY9.
3. I connected one of the D5 pumps to the "rpm" pin out on the SPLITTY9 using a 4 pin Aquabus cable
4. I connected the other D5 pump to one of the other spare pinouts on the SPLITTY 9 using a 3 pin Aquabus cable. (I did not have another 4 pin Aquabus cable available).
5. I still had the mps flow 400 unused... I wanted to get the D5 pumps up and running first before connecting the flow meter.

I powered on the system and immediately I could smell fried electronics and see smoke coming from the area housing my Aquaero and D5 pumps. It was a little difficult to see if the smoke was coming from one of the pumps or from the Aquaero. I powered off very quickly. Within a few seconds and unplugged the system from the mains supply.

Next I disconnected all the Aquabus cables from the Aquaero. (This was the only thing that changed from my earlier installation which had been working for a year without problem). And I powered on my system again. None of the "power on" LEDs on the Aquaero were on and when my system booted into Windows the Aquasuite showed null readings for all sensor measurements. Also all of the case / radiator fans were inoperative. It seems that both D5 pumps are now running at full speed (which I understand is their default setting if they are not getting any signal from the Aquaero).

My questions

1. So does anybody know what has gone wrong? Did I actually do something wrong here? It seems that I must have.
   
2. Am I correct thinking the the Aquaero 5 LT is fried / dead now? Can it be repaired or do I just need to swallow the cost of a new replacement?
3. Am I correct thinking that the D5 Pumps with Aquabus as likely okay?
4. Was I wrong to connect the SPLITTY9 jumper to the position I used using a four pin Aquabus cable?
5. Was I wrong to connect one of the D5's to the "RPM" SPLITTY output using a four pin Aquabus cable?
6. Was I wrong to use a 3 pin Aquabus cable for the other D5 pump?

Thanks for any information. I am kinda upset as I don't understand what I did wrong that would lead to such a catastrophic component failure.

- Simon.