Street Fighter II
Gottlieb, 1993You're currently viewing posts by Pinsider hawkeye11.
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The factory solenoids on those ramps need to be upgraded to an A30468. The old coils are most likely fried and what smoked Q8 and Q9. After you repalce the coils and transitors make sure the eos switch on those ramps is adjusted properly.
Quoted from aaronc70:Does anybody have a link that references the reason for the upgrade?
Todd discusses it in this video:
Basically the original coils they used weren't good for that application. As a result they fry and blow the transistors. Which is what I suspect happened here. If you replace the transistors, but the coils are bad or the eos swith isn't doing its job, you will just blow the transistors again.
Test the coils and the transistors. Replace any that are bad.
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