E0 error panic saurus machine help

[Chadelr]

Hi so what I learned is that this is a coin jam. There is no jam I took it off the machine and unplugged all the wires. Did a reset and still reads E0. I'm guess the two black pieces pictured below are the sensors?? I tried cleaning them and still nothing.. Help I'm new to the whole slot machine game.. I purchased this on an auction for $20. What are they worth? Pictured below is what it reads and the black pieces are they the seniors?? Thanks fellas