Quoted from V8haha:

So that’s the strange part. It doesn’t lock up when powering on.
I can play a game everything works then all of a sudden you look up and the top flipper is locked on. I power off immediately. Coil can’t be locked on for more then 15 seconds. Although it’s enough that it melts the coil sleeve.
I take off the glass move the flipper down by hand and it moves back. Turn the game on and the flipper doesn’t lock on or do anything strange. It stays down i try to flip with buttons and it will jump slightly but not all the way because of the melted coil sleeve stopping movement
Thinking about it now maybe when i start a game the coil gets hotter and hotter with each flip and eventually gets hot enough to melt the coil stop and hold the flipper in the up position not electronically but the melted coil stop not allowing free movement.
If that’s the case maybe it’s not locking but just over heating over time. Maybe that bad cap is sending constant voltage.
I can try to remove the old coil sleeve and cut off the cap and see how it works.
I only have 1 more new coil so i want to try to find the issue before messing up the last coil i have.