G07 Horizontal Collapse: DOH!

fatsgt

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Well, I picked up a machine with a nice looking G07 Picture. I got it home, plugged her in and the monitor had Horizontal Collapse. (Yes, Horizontal, not vertical).

I opened her up and after a close inspection I noticed the Dag wire had come loose. DOH!

I hooked it back up but I still have Horizontal Collapse.

How should I trouble shoot this? Is my problem in the chassis or did I damage something in the Yoke?

Thanks
 
Well, I picked up a machine with a nice looking G07 Picture. I got it home, plugged her in and the monitor had Horizontal Collapse. (Yes, Horizontal, not vertical).

I opened her up and after a close inspection I noticed the Dag wire had come loose. DOH!

I hooked it back up but I still have Horizontal Collapse.

How should I trouble shoot this? Is my problem in the chassis or did I damage something in the Yoke?

Thanks

first thing i would do is check the B+ and see what its at.
 
I've never seen a monitor with horizontal collapse. Please take a picture and post it, I wanna see it. :)
 
I had a thread about the same issue awhile back, I'll see if I can find it.

If I recall, it was a busted width coil. Replacing it fixed the issue.




Looks like I changed the flyback and width coil to fix the issue. It was the width coil though. The other flyback proved to be good.

Take ohm readings from your yoke wires, check the b+, and look at your width coil.
 
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It is a G07 and you did move it. I would pull the chassis and check for bad solder joints and any other broken or missing items. I had a vertical collapse happen recently when someone moved a poker machine with a G07 in it. The slammed it down so hard it popped a trace right off the PCB at a through hole where a cap was.
 
I had a thread about the same issue awhile back, I'll see if I can find it.

If I recall, it was a busted width coil. Replacing it fixed the issue.




Looks like I changed the flyback and width coil to fix the issue. It was the width coil though. The other flyback proved to be good.

Take ohm readings from your yoke wires, check the b+, and look at your width coil.

yeah those width coils sure can crumble apart. i stock hundreds of them if you need any.
 
horizontal deflection isn't the same as vertical deflection in that it's driven by a separate IC. horizontal deflection is tied to high voltage, therefore if you have an actively running monitor, it's impossible in the same sense as vertical collapse to have horizontal collapse.

original G07 width coils crumble on their own, that's why you get a new one typically with a cap kit. it will either be that or the yoke header has cracked solder joints on the horizontal portion. or you have a blown trace coming off either the yoke or width coil.

if it's none of these, then you have a bad yoke. people steal these off tubes all the time, finding a replacement shouldn't be difficult.
 
Thanks for all in input. I'm just wondering if running the monitor with the Dag Wire off the could have made this happen or it was just a coincidence?
 
You only answered about the end going to the braided wire around the monitor not about the other end
 
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