So I am having issues blowing fuses F5 and F9. When I got this game, the magnets were not working. Read through a lot of magnet problem posts and decided to rebuild the magnet board. It worked great for several months. It recently began blowing F5 and F9. Unplugging the magnet board solves the fuse blowing problem. I replaced the mosfets again and the fuses still blow. I then replaced the ic on the magnet board but still blows the fuses as soon as the machine is powered on. The magnets themselves check ok. There is nothing else to replace on the board really. What else could be causing this problem? Is it possible that a new magnet board would fix this or are there other components involved with the magnet system that I am unaware of?

Well I have checked the magnets and all are showing 4.5 ohms. I can't find anything else wrong so I guess I will order a magnet board and hope that it takes care of the problem.

Installed an aftermarket magnet board and everything is working properly now.

http://www.greatlakesmodular.com/