Whirlwind
Williams, 1990You're currently viewing posts by Pinsider dumbass.
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Quoted from loren3233:Also since I have the board out should I replace R82-R89 ceramic resistors? There seems to be a good amount of heat underneath those resistors.
Quoted from PinballManiac40:Though, they don't fail often.
I concur with PinballManiac40. These don't fail often (if at all).
If you're worried about the heat ... have you considered http://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Using_MOSFETs_in_the_Lamp_Matrix_Circuitry ?
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Greenwood, IN