Hi
I have 4 of these desks, the error you may be getting is a power failure which I had to rectify on all the desks at some point.
Each section of the desks has it's own power connector like a motherboard in a PC. basically they have smaller boards that need there own power supply.
Depending on how the desk was made these can and do come apart, especially when you open the desk up.
It opens like a clam and if you may not notice the power connectors on the right hand side towards the back. If they were clipped to the chassis they will come apart and you will get different errors as they fail.
Open up the desk if you feel qualified to do so, or get some one who is and pull of the large multi pin connectors use a tiny bit of Lock tight or similar then reassemble. Do the same for all the power connectors and try get some slack into the cables. Make sure all power connectors are locked up tight.
Close up the desk and power up watching for any areas without power.
I have used the desks daily and they were both second hand they play fine now and one of the must be 8 years old!!
Cheers
All
Bob
Wavesound