The Fridge climbs to 50 and then sometimes cools back to 40 and under. I replaced the fan a year ago and it worked fine until 2 weeks ago. I took the fan out and pulled the blade a little forward. Do you think it's the fan or?
You will want to check the thermistors on the unit to make sure that they are within range. The range should be as follows: @ 0 degrees 42.2K ohms, @ 37 degrees 14.4K ohms and @ 77 degrees 5K ohms. If outside of range then would need to replace the thermistor. If the fan is ramping up and down then the control board would be the issue. Check the coils to make sure that they are not clogged with dust. Check to make sure that the condenser fan is running.