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Sunday 21 January 2018 at 16:13
Quoted from JethroP:The 2.2 was what I measured there. Was supposed to be 5?
Pin 14 of U15 measured 2.2 volts? It should be 5 volts since it's connected to the +5V power rail.
Quoted from JethroP:Should I use the 74s37 substitute?
Yep, grab the 74S37 instead. Grab some replacement IC sockets for b...
Source: http://pinside.com/pinball/forum/topic/rolling-stones-problem-pulsing-tone-with-lights#post-4187364