Middle Ballast Problems

[Riding23]

So at the end of the summer last year, my middle ballast bag would auto fill when you filled any of the other bags. So i swapped out the solenoid with a brand new one, still no fix. So the Boat shop out here swapped out the valves with a new one. Well had it out last week for the 1st time and now the middle wont fill at all. It drains but doesn't fill! any ideas?
Thanks!

[VA LSV]

Check that you have 12 VDC at the solenoid when you flip the switch to fill the center bag. If you don't, check the fuse under the dash.

[cfdrews12]

If you've checked the fuse, also check and clean the connections on the back of the switch. They can get junked up over time and simply not having a good connection when you flip the switch means no electrical connection to the valve or the pumps. There is electrical cleaner you can spray on and let sit for a moment and then wipe off. I've "borrowed" an Emory board from my wife to file down to get a bare metal connection and that has helped in the past as well. It sucks to replace a value or pump only to find out its the electrical connection or fuse.