Technician / Training

I have been working on our Melco EMT10T machine myself since we bought it in 1998 and using the manuals and customer service, I've been able to get by. As time goes on and larger problems may come up with the machine getting older, I started looking for technicians in my area and realized that there aren't many techs out there. I'm in the middle TN area.

My question to all is this: Does anyone know where I can get good training to become a technician myself? Melco doesn't offer schooling on their older machines. Any ideas or suggestions would be appreciated.