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FED 387 · 10-22-2010, 05:33 PM

As far as the coils go check the resistance between the positive coil terminal and the neg coil terminal resistance should be less than about .016 or so then check the resistance between the positive coil terminal and the coil tower that should be about 30 ohms---if either of those numbers are off the coil is bad---if the numbers are close then you have problems elsewhere---also check the air gap at the pick up and make sure that the magnets in the flipper wheel are not loose too as well as the pickup wiring----do you have ANY other wires running in close proximity to the pick up??? Those pick up wires should be shielded you can get some stuff at most electronics stores to do that helps prevent any stray signals from interfering with the signal from the pick up to the MSD box---Comp

10-22-2010, 05:33 PM	#5
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,416 Likes: 522 Liked 330 Times in 178 Posts	Re: Msd 7? As far as the coils go check the resistance between the positive coil terminal and the neg coil terminal resistance should be less than about .016 or so then check the resistance between the positive coil terminal and the coil tower that should be about 30 ohms---if either of those numbers are off the coil is bad---if the numbers are close then you have problems elsewhere---also check the air gap at the pick up and make sure that the magnets in the flipper wheel are not loose too as well as the pickup wiring----do you have ANY other wires running in close proximity to the pick up??? Those pick up wires should be shielded you can get some stuff at most electronics stores to do that helps prevent any stray signals from interfering with the signal from the pick up to the MSD box---Comp