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Author Topic: Star trek Gun Problem  (Read 1907 times)

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kardenm

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Star trek Gun Problem
« on: April 08, 2011, 10:24:16 am »
We have a Williams, Star Trek NG pinball.  Been going over whole game cleaning and fixing.  Have got everything working except the left gun has a glitch we haven't been able to solve.

All the optos, switches and motors work during tests but while playing the game this gun fires the ball but the game doesn't register that the ball has been fired untill the trigger is pulled a second time.

We have been advised by some "experts" (board-only repair tech) that this problem has been encountered before but that the problem is NOT in the CPU board.  He thinks problem somewhere in the wiring or optos.

Can anyone shed some light on this?  Has anyone out there encountered a similar problem?   :dunno
In theory, there is no difference between theory and practice, but in practice.....there is!!

Q*Bert_OP

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Re: Star trek Gun Problem
« Reply #1 on: April 08, 2011, 11:14:47 am »
Replace the cannon wiring harnesses.

These start to have problems around 2000-3000 plays.

WTB: The Grid by Midway (2001), looking for 2 or more complete games, and large marquee

ChadTower

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Re: Star trek Gun Problem
« Reply #2 on: April 08, 2011, 11:35:27 am »
Replace the cannon wiring harnesses.

These start to have problems around 2000-3000 plays.


Or repin them.  Replacing a harness with a crappy connector on a regular basis is foolish.

kardenm

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Re: Star trek Gun Problem
« Reply #3 on: April 08, 2011, 11:42:17 am »
Thanks for the tips Everyone!!

I will look into these and let you know what I find.
« Last Edit: April 08, 2011, 11:43:48 am by kardenm »
In theory, there is no difference between theory and practice, but in practice.....there is!!

Q*Bert_OP

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Re: Star trek Gun Problem
« Reply #4 on: April 08, 2011, 12:22:03 pm »
Replace the cannon wiring harnesses.

These start to have problems around 2000-3000 plays.


Or repin them.  Replacing a harness with a crappy connector on a regular basis is foolish.

The wires break internally at the pivot point.  :bat
WTB: The Grid by Midway (2001), looking for 2 or more complete games, and large marquee

ChadTower

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Re: Star trek Gun Problem
« Reply #5 on: April 08, 2011, 02:18:02 pm »
The wires break internally at the pivot point.  :bat


So make yourself a better harness.  The point is that if the OEM part is a common failure, and it's an easy to make part, address the issue.  Don't just keep rebuying the part.

ChadTower

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Re: Star trek Gun Problem
« Reply #6 on: April 08, 2011, 03:08:07 pm »
Or just buy the part and be good for another 20,000 games.


That's a lot more than 2000-3000 as stated above.

kardenm

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Re: Star trek Gun Problem
« Reply #7 on: April 12, 2011, 02:33:32 pm »
Thanks everyone.  Sure enough, I found a broken wire inside the cannon harness, right where it goes through the mount bracket.  Was able to repair but may replace harness anyway.

 :applaud:
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robertwillton

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Re: Star trek Gun Problem
« Reply #8 on: November 10, 2011, 02:30:45 pm »
I've seen this video before of a DIY Star Trek Blue-ray phaser gun.The Star Trek fictional universe contains a very large number of weapons. As with most science fiction franchises, the series focuses primarily on energy weapons.