Saving Circuit Board w/o Tube

[Outland]

I have a 1994 Panasonic TV with a bad tube but good circuit board. I want to save the circuit board. From watching videos online, separating the circuit board is simply a matter of pulling the board off the gun, and that's it? It's been switched off for more than a week, so I think there is little residual charge left.

Similarly, I have the same model TV with a good tube and a (occasionally) bad circuit board. I can simply swap in the circuit board as I removed it from the old one?