You've been around here long enough to know where the FAQs are. There's a sticky thread right here in the S+ section with a link to common IGT S+ errors and their resolutions.
Some notes to help you out with your troubleshooting:
- There's nothing in the resolutions for a 65-1 or a 65-0 that suggests you should open and close the door many times, turn the jackpot reset key, or pull the power plug. If you come across an unfamiliar error code, check the list first and also consider searching this site or the archive site for the error code to find threads about the problem.
- In case you're not familiar with it, the EEPROM is soldered to the fixed motherboard in the bottom (or back) of your machine -- it is not located on the removable MPU board.
- Before you go and change out the EEPROM on the motherboard, try installing a vastly different SP chip (or a different MPU board with a different SP chip) to try and give the EEPROM a kick in the pants to start working again. It may or may not work, but it should only take a couple of minutes to try and it's easier than replacing the EEPROM or the motherboard.