eyemablessing

Hi, we just purchased an older model hot tub. We hooked it up and tested it for power and it has power running to it but nothing comes on when we push the control panel. No lights, pump, sound....anything! When we tested it, the tub kicked on, the pump ran, light worked, etc but we cannot figure out what is causing the issue. I thought that maybe it was the control panel, so I bought a new one; however, that didn't fix anything. I am trying to troubleshoot before I spend more money that won't fix the issue. The pump is less than 2 years old. Any suggestions will be appreciated. Thanks!