DJM-900NXS Main Display Unit NOT Lighting up (Beat Effects)

Hi All!

I've bought a DJM900 from Cash Converters. There has been no faults declared. However when I have tested the equipment, the Main Display Unit for the Beat Effects does not light up... I have the option to get a full refund, but I got the Mixer for a good price...

I would like to know what part needs replacing and how much? Maybe I could bill Cash Converters for the repair or just take it back...

Please help!

Regards,

Micky