I’m not an expert on plasma tables but I guess the principles of CNC machines are all the same. I’ve not heard of that make either but posting some pictures of the control boards here should get a response. There might be some obvious component that can be a weak point and worth changing out. Or at the other end of the cost scale it could mean replacing all the electronic components to a newer system. Depending on what you have this might also involve a control software change too. Don’t know what bespoke software came with that package.