As my knowledge of these kind of items are limited I do not know what the problem could be or how to test it. 
When connected to power some of the lights turn on, sometimes really bright and sometimes dim im not sure if the power supply I am using has enough power for this device. Also the 2 fader sliders don't look very sturdy may also be damaged. This is as far as i could test the item could have any of the problems listed below. overall condition is good.
Untested may have any of the faults listed below.
Came from a pallet of faulty items.

What you see in the pics is what you get. 

Strictly sold as Spares/ Scraps No Returns. 


DEFINITION OF FAULTY - SPARES FOR THOSE THAT FIND IT HARD TO UNDERSTAND. 

When you bid or buy my items you are agreeing that you understood the definition of faulty/spares items thank you