Issue with tadao yakuza usb board
So I have had this board in my vice for maybe 2-3 years, it has now become my backup so I havnt used it in a while. I pulled it out last week and the OLED screen was very dim, couldnt see it at all and the marker wouldnt shoot above 150 fps I put a new battery (Duracell) in and relubed everything still wouldnt go above 150, LPR at 70. I plugged in the usb and reset factory settings and then the OLED screen wouldnt even light up, just the bottom right few cells of the oled would light up. I put the stock board back in and saw the eyes were not working either, basically my question is do you think the board is broken, if so, what would cause the board and eyes to go out at the same time?
TL;DR What would cause my board and 4c eyes to go bad at the same time?
Sorry if this is not the right place, didnt really know where else to put it
Thanks for your input