Square retail register

Product Name: Square retail register
Beautiful condition, however, I cannot get to turn on all the time. I believe it is just a faulty wire for the power retail supply and I ended up buying another terminal and can't return this one. My loss is your gain if you can figure it out. There is no damage to this. I have the original power cord that I will include and you will notice I have taped the wires back up. I had rewired the cord and had it working temporarily which makes me believe it's the cord/ power supply. Again. My loss your gain. I don't want to mess with it, and I can't return it.