For Sale. TwoTrees Saphire Pro UK sale

[Bikeracer2020]

I have a brand new Sapphire Pro that will not actually print, at a guess it's the mainboard.
The extruder works, the bed and hot end both get hot, the move controls on the touchscreen work and the head homes.
There is no comminication via USB and a supplied file on the SD card loads but does not print.

I am new to this and have no idea how to turn it into a useable machine.

I thought it might make a good project for anyone that knows what to do because it seems Banggood do not honour their returns policy.
I've dismantled it back into how I got it in the packaging it came in.

I paid £260.00 for it about two weeks ago.

Asking £100.00 plus postage or can be collected from Newark Notts.