A corner board is damaged at the bottom as the downpipe was missing and rainwater fell onto the panel.
Unfortunately, it's not just a matter of removing it because details around the doorways must be removed first otherwise. Unnecessary hassle, I think.
Considering taking a board to the miter saw, cutting the end at an angle.
Using this board as a template, placing the multi-master against the template and making an angled cut in the panel board.
Breaking off the damaged lower part. Then making a new board that matches and nailing it in place.
Paint and move on with life.
(thought of cutting a bit above the hinge.)
It seems like an okay plan for an outbuilding; it seems like they used to splice at random without even angling to avoid water getting deep in between... or that’s what I guess, haven't removed such boards yet to see how they did it.
And if not, I'm a bit of a wood nerd and therefore like to use wood glue and sawdust in the joints. Sand it down roughly, and I think it turns out really well. Use a knife or something to press the paste into the joint.