Not an expert but I would look into replacing the control board itself rather than trying to fix it. If you can reset it, I would guess it uses a jumper like on an oldschool motherboard.

Its weird to have to defend Biden but he did get some things done, the way you are characterizing his record isn’t really accurate. I would expect that if Biden had FDRs numbers in Congress he would have been a lot more successful too. Not that his term wasn’t also a lost opportunity and full of failures, but not everything failed. There’s a whole bunch of people who don’t owe student loans now for example, even if they weren’t all forgiven due to the courts, etc.