New to here so Hi to everyone..

I am currently restoring a SF2 pinball and have managed so far to get a few parts working that were not, but I am struggling with the Bottom Right Upkicker (Sol.4).

I have been using the very helpful repair guide by the legend that is Marvin3m (thank you), but I am completely stumped with getting this coil to fire when the ball lands in it.

I have done the following and everything checks out:

1 - Coil gets voltage at both side of the lugs
2 - Coil gives ohms reading
3 - Momentarily ground non-banded coil lug and coil fires
4 - Replaced the MosFET for this coil (just in case) was giving a dodgy reading
5 - Momentarily touch Ground to the relevant MosFET (Q5) and Coil fires
6 - Checked switch that connects to coil so machine knows ball is there - Working

Everything looks like it is getting the correct power etc but when the game is playing and the ball drops in to the hole you hear the game acknowledge it knows the ball is there but does not fire it out.

The left side works fine and is on the same fuse so completely lost?? Can anyone help??

Please note that I am fairly new to this and have limited knowledge of electronics but have had some experience with these machines and so far not electrocuted myself...

Thanks Ralph - sometimes the obvious misses you by, I ran the test and it did not fire. On further investigation I found that one of the mosfets has been badly put in by a previous repairer, the mosfet was doing its job but the connection on the circut board had been damaged. A simple bridge wire used and it is working like a dream.

Now I only two other bits to fix and then she is fully working - a simple coil change as have noticed the upper left flipper was blowing fuses and it is the incorrect coil and the #67 bulbs linked to the coils don't look like they are working.

But everything else is working and have spent the past 4 hours playing it with my sons and love the fact that they might be able to beat me on Call of Duty but dad has the high score on this

Hi - Coil did not have a sleeve and was shorting out and was also the incorrect coil, new one on its way from France..! and then should be rocking and rolling. Still hold the high score and my sons are not even close....lovin it..!