Mr. Pinball Tip:

Bally solid state pinballs often use .05uF capacitors across switches that are likely to have a short duration switch closure. The capacitor lengthens out the time that the switch appears to be closed so that it can be detected. Otherwise the closure will be missed on fast switches such as standup targets. The capacitors will fail eventually and may short out causing the switch to appear to be always closed. The quick fix for this is to remove the capacitor.

If you find that some of your targets are not scoring during the game but do during switch tests, then you may have missing capacitors. Also look on the bottom of the cabinet for capacitors that have been clipped off--this will indicate that you may have switches with missing capacitors.
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