VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

March_2001
RE: VECTOR: Tac/Scan Question


From: Jenison Mark-QA3578 ( )
Date: Thu Mar 15 2001 - 14:17:01 CST


>
> This is sort of an odd problem. Just recently, my Tac/Scan has been
> getting some electrical current into the metal rotation knob.
> When you
> power the game up it's not a problem - it's just when you
> insert a coin
> and start a game. It's very irritating on the hand to have current
> running into your fingers. In a way though, I find it somewhat
> humorous. I've tried reinserting the boards and re-connecting some of
> the molex connectors.
>
> Can anyone point me in the right direction? Perhaps a ground wire is
> loose?

Do you have a third prong on your plug in? If not, add that first.

There are grounding straps running throughout the power/game board area.
Make sure everything is grounded in there. I've often seen a grounding wire
soldered to the 12pin of the connector to the CPU board (which incidentally
is the gnd for coin, service, and reset). I don't remember if there is a
grounding strap going to the latches which hold down the CP.

-- 
Mark Jenison
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