I had RM 7710 and it worked fine for a few years then it started to act up. After about 30 min after startup it was fine then the screen would go so dim I could barely read it and stayed that way. Tried to set brightness but it was set as bright as it could go. I just bought the RV 760 Garmin and learning to use it.......
2004 Monaco Signature with a Detroit 60, Vorad Radar, Samsung Fridge, Induction cook top, 2020 GMC Denali