Exact same happened to me a couple times on my new WoZ, not too long ago - completely melted down the coil in the end. JJP support (Victor/Frank) sent me a whole new drop down target assembly, which required a bunch of soldering in the middle of the playfield of course since there are no connectors for this in there. I tried to suggest that perhaps the coil should not be repeatedly trying to push the target up if it is stuck to avoid melting/frying/catching fire/etc but they did not seem terribly interested in that at the time. (not enough reports of this i think was the response?!) I have since suggested it again a couple days ago. I have heard from someone else who said they immediately open the coin door or turn the machine off if this happens so as not to melt it down, but this is really a terrible solution, and I don't think its right that we would have to "babysit" our machines while anyone plays, keeping an eye out on the target ready to open a coin door or turn it off. This is clearly a defect in the handling of the machine and easily fixable through a code patch. I'd honestly suggest we all speak up on this to get it addressed.

For what its worth, my target is as flush with the playfield as possible, but the top is slightly angled forward so it can't be perfect. Definitely correct that a carefully balanced ball will stick there, although thats not how mine happened, it was simply a case of bad timing in the middle of the multiballs.

Awesome checking and video there. Are you able to email that straight to Keith?

Definitely needs to be fixed somehow with certainty - there is a potential for continued power to the coil melting it down until power is removed by an operator who knows what is going on, which is quite possibly (likely?) after damage has occurred and hopefully before a fire is started. At the very least there needs to be a software safety that disengages it after some attempts. Better if it can go into some kind of self-check mode after that where it does a quick check after a bit to see if it has freed up so that it can resume normal operation from the "degraded" mode it was put in by the safety.

It scares me even at home because I myself am not always watching or even at home when someone else is playing. When the meltdown happened it left a burnt smell in the room that lingered for days.