Bell Ringer
Gottlieb, 1990
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Quoted from MarAlb:Why doing the groundmod in system 3 games? Gottlieb used decent connectors in system 3. Groundmod is not needed.
It isn't the quality or otherwise of the connectors. They simply didn't wire some grounds in place.
This can cause all sorts of voltage errors because of some floating grounds.
The suggested mods tie all the grounds together as they should have been in the first place and prevent random things as well as damage to the electronics.
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