Star Wars Amplifone Problem

Kalan714

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Bought a project SW Cockpit a few months back and ended up selling it to a friend. It had a 25in amplifone in it but had the wrong yoke. I learned that it required a yoke off a 6100 which I luckily had saved. When I went to his house and put it on it came up nice and clear the only problem is shows horizontal not vertical (or vice versa). I know there are a couple wires to move around on the connector I just don't want to smoke anything in the process. Anyone know which wires to swap? Will post pics shortly.

IMAG0032.jpg

IMAG0028.jpg

IMAG0025.jpg

IMAG0027.jpg
 
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Amplifone

I'm not sure if he still has the other yoke but i'll ask him. I did try to rotate the yoke and it still was not working.
 
The yoke is on correctly. The colors of the wires going to the deflection board is also correct. Conclusion: x and y signals on the input of the deflection board (or the output of the game PCB set) are reversed. Check wire colors...
 
The horizontal and vertical have been exchanged to cause the side of the video on the bottom of the screen. The "mirror" effect that the words are on the displayed backward are also wires that have been swapped. Make sure that the connectors from video amplifiction board to yoke are connected correctly.
 
While the yoke for the 6100 is electrically compatible with the Amp, IIRC, the wire color codes are different. Someone has extended the wires - if they cut the connector off an Amp yoke and blindly spliced it onto a 6100 yoke by matching the colored wires... something like this might happen. I'll have to check the manuals though.

Edit: Just checked the manuals, I guess the wire color code is the same, at least according to this. But.. your connector is wired wrong. Should be:

1 - Red
2 - Blue
3 - Yellow
4 - key
5 - Black/brown

So, it's exactly backwards. You've swapped the X and Y windings. Just pop the pins out of the connector and put them back correctly, should solve your problem.

-Ian
 
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