I had a similar issue with a FLP023 Rottendog board a couple years back.
Turned out the wrong transistor were installed and ended up blowing and locking on the flipper coil. I believe a batch of these boards were affected.
I think Q1 Q2 & Q3 are supposed to be 2N3906. I’d double check those parts with a meter and at least test to see if the one related to your flipper is reading differently.
You should be able to find more info on the forums.
Edit : link to the issue with responses from Rottendog
https://pinside.com/pinball/forum/topic/rottendog-flp023-data-east-flipper-board-issue