POG 580..need help from the Pros

[Venang]

Hi everyone!
I have an issue with one of my POG 580 machine. I noticed that there is NO green light blinking from the bill acceptor. A solid green light will only come on when the money box is removed. So I decided to switch the bill acceptor to a another working machine and the bill acceptor seems to be working fine. So i guess im sure that the bill acceptor is not the problem. I havn't seen any error alerts popping up so I couldn't say or guess what it could be. I'm hoping there is someone who has experienced the same problems who has resolved this issue or know how to. Everthing else seems to be working fine, i can navigate through all the different games. Seems like the motherboard doesnt want to communicate with the bill acceptor or something. I had machine working fine for over a year now. Well hopefully there's some experts out there. Thanks in advance

[Venang]

I was thinking about doing a Hard System Reset or Clear All NovRAM but im not sure if that will do anything. ?