Problems with DDJ SX

Hi,

I just received my DDJ SX back from a service center, and I was all ready to turn it on and DJ but upon hitting the power button the SX will start the light dance starting from the top it makes its way down to about halfway then restarts creating this boot loop,  I updated the firmware and it's not a serato issue, it just will not turn on :( any suggestions before I give up and send it back to the service center?