Yamaha Receiver Internal Error, No Model Info Full Solution

Full solution on how to fix the Internal Error and No Model Info messages on various Yamaha Receivers. This works with Yamaha RXV677, RXA740 and several other models. You are doing this at your own risk and I m fairly certain it will void your warranty and I take no responsibility. That said, it is pretty easy and quick to do and can save you a lot of .