Hi it is always possible but I seriously doubt that.
It is an electrical issue is all. Just need to isolate where either the power or the mechanical part stops operating. Then you will know for sure:-)
there is a way I can gain the entire schematic for this so we can determine which pins need to be checked for power and in this case since you have already replaced the main parts, it is always possible and I am leaning on a bad wire, its rare but it does happen form time to time, that's why a meter is a great tool for this.
If I were there I could fix this quickly I'm sure.
But if you will rate my service thus far as ok, and when I look through the schematic, I can tell you where to make the tests so you can find this problem.
I have been a tech for over 30 years and seen it all lol.
it will take me a day to go over all the tech data but I will do that for you also when you rate, the system here allows me to schedule free follow ups with you so this question will not close or cost you anything further.