Lucky & Wild Namco (1992) Please Help!

laphroaig

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Donor 2012
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I just purchased a Lucky & Wild cabinet and the video is bleeding and has snow moving down and slightly to the right:
http://www.youtube.com/watch?v=wYvsGP4AYnc

Occasionally when I am opening and closing the coin door the game brightens and the other issues clear up a bit.

How can I fix this?
 
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Possibly a bad video ground connection. Firstly verify that ground and video ground are connected on the board, then check the continuity of your video ground from the harness to the monitor chassis.
 
I have one but have never had that issue so I'm not sure of how to tell you to check it. There is a test mode for the game as I recall, and the menu has multiple options (and pages). You may want to flip it into test mode and see if it generates any errors that might be causing these glitches. That's my best guess to start off with.
 
Possibly a bad video ground connection. Firstly verify that ground and video ground are connected on the board, then check the continuity of your video ground from the harness to the monitor chassis.



Everything appears connected properly besides one of the coin mechs. I disconnected the coin mech from the counter and it didn't fix it.

All of the ground wires seem to be intact. Is there a specific way to check the continuity of the video ground? Am I just looking for holes, burn marks etc?
 
Seems a monitor issue, you can check continuity with a multimeter for the ground to come at rgb monitor connector from rgb pcb conn, or it would be the pre amp of monitor circuit, check if monitor has an LM1203 IC at the neck board, if it does, try to replace it and see what happens. Also check caps in that. Good luck
 
Does it clear up or change if you smack the side of the cabinet hard?

If so, you have some bad solder joints somewhere on the monitor. That would explain things clearing up a bit when you close the coin door.
 
Does it clear up or change if you smack the side of the cabinet hard?

If so, you have some bad solder joints somewhere on the monitor. That would explain things clearing up a bit when you close the coin door.

I don't think it clears up when I smack it but I do understand what you are getting at.
When the wires of the coin door mech are slightly moved sometimes the video gets better and sometimes it gets worse.

The wires are not being moved much at all, sometimes just a a few millimeters and they are not pulling anything connected to the monitor.

The monitor is a Hantarex Polo 28".
I added a pic of the coin mech to elaborate on what is happening.
 

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