Hey Gordon,
Yeah, they are wonderful machines. I can only speak of the 2800's I have had. Never had an electronic issue. My current 2800 is D model so I can only guess that the production date was around 1982 - 84.
The smart board is works fine and the flourescent display is still bright and the warm arm, sensor, drain sensor and detergent cup sensor all work as designed.
Amazing, isn't it, that a 25+ year old machine can still provide capabilities that are on not on modern produced machine.
Some machines give you some of the functions (a very few tell you of blocked wash arm. I don't know of any that tell of unopened detergent cup, water below temperature, blocked drain, slow drain, low water level.
In addition you have a full user display of current operating functions (wash, rinse, dry), energy usage, and countdown timer. Plus a visual alarm as well as audio alarm of malfunctions.
I never had the 2200, but like the 2800, it was a good looking machine, and still had more functions than many of today's dishwashers.
No, I agree, a GE Tall Tub is a let down after having a 2800 or 2200.