K4900 - Rolling bar through the pic

richiewoo

New member
Joined
May 21, 2010
Messages
253
Reaction score
5
Location
Douglassville, Pennsylvania
Hi, I have a Tron with a K4900 in it. It didn't have a real bad picture, but had never been capped, so I figured why the hell not. Plus there was a rolling bar going left to right. So I guess it's really top to bottom because it's mounted vertically.

Anyway, post cap kit, it looks great, except that rolling bar is still there. It's not immediately noticeable, but on certain screens you can really see it.

Any ideas? I didn't see anything on the flowchart that talks about this sort of rolling. The pic is really fine, except for this rolling bar.

I may do the filter cap, but figured I'd post first.

Thanks
 
The symptom sounds like it's from a bad bally fuse holder down on the board, not on the monitor. It might be only on Ms.Pac, though. Not sure if same is true for Tron.
 
Try to get a vid of what you mean. To some, a rolling bar means a Hum Bar, and is typically a fuse issue as stated above. To others, a rolling bar is a black bar that moves across the screen, this can be caused by something else...
 
I had a rolling bar with a loud hum in my spy hunter and replacing the two large caps at the bottom of the cabinet fixed it.
 
Ok

I should have posted a pic or video...

I'll get something up tonight. I was wondering if it might be the big caps on the PS. It's like 2 big blues in there! Double your pleasure!
 
Video of the issue

It's real short (the video) but it shows the bar/roll that I'm talking about. It's more evident in the video than when you're looking at the game, but it's still there.

What do you think?

There is also a buzzing in attract mode, but that could be a separate issue.

Click here to get to it:

http://www.mediafire.com/?g0sgz9n6myy36gd

That should work... sorry that you have to download it. I was having trouble posting and wanted to get it on here. Thanks!
 
Bump her up!

Still have the game apart for cabinet cosmetics, but still looking to solve this.

one thing I am going to do is hook up the monitor in another cabinet to see if I can reproduce it there. It will eliminate any cabinet PS issues.

Check out the video and lemme know what you think.
 
Back
Top Bottom