1.) You could only exchange the LED with a new one. There is no way to adjust their brightness. If you want to exchange it we can send you a new one with an envelope. If it still is much brighter, then there must be something wrong with the power supply for the LED.

2.) Can you provide a photo. At the moment it is hard to understand what you mean.

3.) For both devices you can configure the start boost. The aquaero will always start up the fans for about a second. It might depend on the fans if and how fast they will spin up in the starting sequence.

First thing: remove the power from this poweradjust controller!

We had a look at the layout of the PCB and think that there is some kind of short circuit which supplies the LED with 5V. Depending on the short circuit it is possible that only the CPU of the controller will limit the current which means that it will burn down for sure if you run it any longer that way.

I recommend to remove the poweradjust from the PC and have a closer look at the PCB. Watch out for soldering points that might cause a short circuit:



The green arrow shows what I mean but in this case it is OK because this resistor and the left pin of LED are connected anyway through a circuit path. But if you see something similar to that in the area which is marked with the red arrow it will be wrong. If the soldering point there has contact to the circuit path you have to cut this connection. It should be enough to point a soldering iron to the soldering point to make it move away.

The arrows show only examples, but if there is a problem, it must be in the area around the LED.

If you see no problem or you can not solve it yourself or do not want to try it yourself, please send back the controller for a check or repair.