Anyone know how a simple vibrator works and how to fix one? Have one that is having trouble working after a few months, and know it has something to do with this metal flat wire that runs down the interior of the battery shaft. It’s not the motor either. I’ve randomly gotten it to work partially or intermittently fully, but can’t get it to work consistently or at all sometimes. It’s some sort of contact problem. I could chuck it and order a new one, but don’t want to waste money on something that will just break again.