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It sounds like the door switch thinks the door is open which is why the touch screen won't illuminate and the dispenser doesn't work and such. I'd be checking the door switch for the door with the control panel built into it. If you don't know how to test it with a multimeter, then I'd just order and replace it.
It could cause some of the issues, but it wouldn't stop the dispenser from dispensing ice and water if that were the case. Usually the door switch issue has to deal with the main control board. This refrigerator is known for the relay on the main control board failing which controls the lights inside the refrigerator.
No, they do not. If the fan is running then the switches are working. But if the switches aren't the issue, the main control board on the back of the refrigerator is the faulty part that will need to be replaced.
Correct, there are 2 on top so if you replaced one, then it sounds like you need to replace the other one.
If the conditions didn't change whatsoever when you replaced the board, then send it back because you would never have the exact same conditions after replacing the board even if it was faulty.
No problem and good luck!
Possibly? But to me it sounds more like the compressor wasn't actually running if the fans were still running and the unit was warming up. But I'm not there to know that for sure.
OK that shouldn't matter.
I'm not sure where to tell you to go next so I'm going to opt out since I don't know of anything else that would cause these symptoms. I'm sorry but I wish you the best.