Is the green wire from the hopper optics gong to the ground?
Run the hopper <3> test again until it spits out 10 coins and stops every time.
If not, then you have to wait until the new optics come in.
In Reply #3 you said the hopper <3> test worked spitting out 10 coins, but by Reply #12, it's a runaway hopper.
I hope by hooking them up wrong, you only burned out the hopper optics , not anything on the MPU.