Sega/Stern whitestar flipper issue

ELutz

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I've got a Sega Godzilla I'm working on. The flipper coil was burnt to a crisp (for whatever reason, the flipper fuse didn't blow...it was correct value). I checked the MOSFET that drives the coil...it seemed good...EOS was good....I replaced the coil, and I though all was good. After a few hours of play, the flipper coil fuse blew....now I know something's up. I replaced the driver MOSFET and the fuse. I let the game set in demo mode for hours....the flipper coil was nice and cool. I played about 10-15 minutes and the coil is almost too hot to touch. My question...what am I missing? My understanding of the whitestar system....the flippers are on more of a timer (for lack of a better explanation)....and the MOSFET is the "driver". Any ideas? Anyone had this issue on the newer Sega/Stern games?
Thanks!

Edward
 
I've got a Sega Godzilla I'm working on. The flipper coil was burnt to a crisp (for whatever reason, the flipper fuse didn't blow...it was correct value). I checked the MOSFET that drives the coil...it seemed good...EOS was good....I replaced the coil, and I though all was good. After a few hours of play, the flipper coil fuse blew....now I know something's up. I replaced the driver MOSFET and the fuse. I let the game set in demo mode for hours....the flipper coil was nice and cool. I played about 10-15 minutes and the coil is almost too hot to touch. My question...what am I missing? My understanding of the whitestar system....the flippers are on more of a timer (for lack of a better explanation)....and the MOSFET is the "driver". Any ideas? Anyone had this issue on the newer Sega/Stern games?
Thanks!

Edward

This still seems to be an EOS issue (to me). It sounds as though the EOS is bascally keeping it stuck open allowing the coil to get hot. Is it both flipper coils or just one?
 
This still seems to be an EOS issue (to me). It sounds as though the EOS is bascally keeping it stuck open allowing the coil to get hot. Is it both flipper coils or just one?

Just the right flipper. The left stays nice and cool....and issue free. I'll check the EOS switch again...Thanks!

Edward
 
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