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Friday 23 March 2018 at 08:56
my impression is microswitches do not always just fail suddenly, but that it is a slow process. In some cases it‘s best just to replace the switch (assuming the obvious things have already been checked).
btw - I‘m still not clear what you meant with bell or ringer in your previous post.
Source: http://pinside.com/pinball/forum/topic/diner-clubowners-and-previous-owners-welcome/page/12#post-4295898
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