1. For a buck twenty is way over the price to make that unit, than that thing is worth at $125.00???
2. See the wires broken at the back of yours? I'd put the money towards a circuit board soldering gun and repair the wires back there.
3. OK, eat the buck and a quarter and then use 'amazing goop' glue over the new (resoldered pcb) so this does not happen again. I see a weak spot and a spot is needed there; for vibration may have killed that 'vibra-point' call it.
4. Want a waterproof pcb? Lay 'goop' over the vulnerable parts or smear the whole unit with a layer of goop. Lots of use with a tube of thatshit.