Let me see if I can recap here and get all my ducks in a row.
You have two threads going on this one machine, one thread is this one "half power" and the other thread for a 3200 error ( extra coin out ) No where have I read that this machine does not now work. If I'm correct so far, why do we care what the voltage reading is at the fuse, the machine is working.
Now your 3200 error, 99% of the time the hopper brake is the dirty dog that will give you this error. The brake is dirty and stuck, or more often its that small spring, it's off, stretched, or broken.