On 2021/09/08 9:05 a.m., ThePinballSpot wrote:
> Folks I am at my wits end and need another set of eyes on this issue. My Rawhide is awarding the feature when it shouldn't. So this game has features like extra bonus, extra ball, lites spinners and bumpers. The features alternate with various playfield switches. When you land in either of the 2 holes it scores the lit feature. Well mine goes beyond that and scores the lit feature any time the score motor runs. So if I hit a 500 or 5000 point target it scores the lit feature. Even after ball drain when the score motor runs to collect the bonus it scores the lit feature on the third bonus count. It is so bad that if the lit feature is double bonus it starts collecting single bonus for the first 2, then moves into collecting double bonus for the rest as the score motor scored the feature. I have checked, cleaned, adjusted and looked for shorted tabs on the following, outhole relay, score motor switches C1 and C2, feature change relay, 500 hole relay and both feature hole switches. Any help is appreciated.
> Thanks, Todd
One area to start with on Stern EM games are the wiper discs for the
bonus, ball count, etc. units. Often one of more traces has arced over
and made a carbon path to the next and you get random oddness happening.
Carve out any carbonized PCB you find - put shiny tape on the contact
face side of the PCB, then fill the hole with epoxy glue. The shiny tape
is to give you a smooth surface where the wiper runs over. Let it cure,
and see if the problem goes away.
If no arcing, then check the contacts on the suspect relay blades. Any
of the rivets showing carbon black on the side that doesn't contact
anything? That is indication of a loose rivet - solder or crimp it down
ChiCoin/Stern EMs are a bit of a pain...there are other tricks but that
is enough for now.
(Please post followups or tech inquiries to the USENET newsgroup)
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