Vortex Sound Research

So, I bought a Multitrak the other day, and I went to switch it on and no sound. The display reads 00, the sequence A led is on, and I can adjust parameters. No audio at all. I tried loading the factory cassette, and Sysex with no results! The circuit boards look totally fine, and it’s KILLING me that I can’t play it! Any help at all would be amazing!