The YouTube solder trick didn’t work for me, so I had to get a new pc board to fix the “salt cell no power†error. It was easy to install - just work backwards disconnecting the wires from the old board and then attaching to new board one at a time while the old one is still in place (work right to left, top to bottom).
Yeah, it’s expensive but cheaper than replacing the whole box.
Hayward Aqua Plus Replacement PC board 
