x y positional gun help needed

vintagegamer

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The 2P gun on my Lucky and Wild has about a 2-second delay if you move it quickly across the screen before the crosshairs appear. It registers in the test mode calibration just fine. I tried taking it apart last night but was having difficulty getting into the section that the gun is mounted to. If you open the control panel up, all you have there is a "mate n lock" connector that goes into the harness. I disconnected all of those connectors and cleaned them with alcohol and reconnected them, no change.

Any ideas or tips? Or do you just have to get another gun when these start to fail? They are NAMCO guns FYI.

Thanks!
 
Usually these guns just have a couple 5k pots mounted in the swivel base. They're not very expensive and can be replaced fairly easily once you get to them. Usually you have to remove the cover just under the gun to get to it's base, and on some games (like my Silent Scope) you have to remove the gun first, too....
 
Usually these guns just have a couple 5k pots mounted in the swivel base. They're not very expensive and can be replaced fairly easily once you get to them. Usually you have to remove the cover just under the gun to get to it's base, and on some games (like my Silent Scope) you have to remove the gun first, too....

This thing has 2 halves of plastic that surround the gun base. Each side has 4 bolts. I removed the 4 bolts on both sides, and the parts wouldn't come off.

I then noticed that there was yet another piece which connects directly to the control panel, that these 2 "halves" slide into somehow. I removed the 4 bolts holding that thing on, and the gun still didn't come off..

I removed the 4 bolts that hold the control panel in place so I could see inside- I got to where I could see the wire harness connectors- I cleaned those and nothing changed. I ran out of time so I couldn't see if there was yet some other 'hidden' bolts holding this thing in place. I was like, "how many friggin' bolts are in there??!!!!"

I've been told that simply cleaning the pot might do the trick- that is, if I can ever get down to it!
 
I had a gun (Aliens Extermination, I think) that I had to take about 38 bolts out just to access the pots in the bottom and uncrack the gun halves to get to the trigger switch. They had a service bulletin about the wiring being a little too tight and causing intermittent firing and tracking. Of course, this was after I had already experienced the problem and had come up with a fix myself, which turned out to be almost exactly the same as the fix they recommended.

BTW - that game had two guns, so I had to do it to both...
 
I had a gun (Aliens Extermination, I think) that I had to take about 38 bolts out just to access the pots in the bottom and uncrack the gun halves to get to the trigger switch. They had a service bulletin about the wiring being a little too tight and causing intermittent firing and tracking. Of course, this was after I had already experienced the problem and had come up with a fix myself, which turned out to be almost exactly the same as the fix they recommended.

BTW - that game had two guns, so I had to do it to both...

I looked at the manual last night and saw the 2 pots. Unfortunately though that was at 9:30PM and I was already looking like something out of a Romero film so, I never got to tinker with the game.

They're coming for you Bar-ba-ra.................
 
Got this thing apart last night, and found the 2 pots. The one for the Y axis was fine, the one for the X (the one in the bottom) was buried in all sorts of crud. I cleaned it all out, and also did my best to clean out the pot itself. It works a 'little' better, but it looks like the best solution will be to simply replace the pot.

The manual doesn't give the specs on the pot, just a part number. Stay tuned.
 
Got this thing apart last night, and found the 2 pots. The one for the Y axis was fine, the one for the X (the one in the bottom) was buried in all sorts of crud. I cleaned it all out, and also did my best to clean out the pot itself. It works a 'little' better, but it looks like the best solution will be to simply replace the pot.

The manual doesn't give the specs on the pot, just a part number. Stay tuned.

I'd be very surprised if it wasn't a 5K pot. It's probably the same as the Y-pot, so just measure that...
 
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