Alas, the system uses a computer and a dongle. If your motherboard is fried, you'll be calling Betson up, and talking with George Angermeyer for help. They have exchange units available (assuming you have the dongle) for around $350.
By the way, it's an old PC, so I looked for the motherboard, and it's out of production, so unless you find someone with a monitor that is bad, you'll be calling Betson.
For what it is worth, the unit they shipped worked fine.