Like I said, recapping the board will bring 90% of all dead Classic IIs with your symptoms. It did for many others including me:

https://68kmla.org/forums/index.php?/topic/23800-semi-successful-recap-on-classic-ii/

Did you use acetone when you washed the board?

Yes, recapping is the only option to repair 90% of all Classic II Boards. More work maybe needed if there is damage to the board (like mine and a couple others since the sound does not work but that's no biggie for me).