Rampage... it's gonna kill me.

adamzero

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I bought a Rampage about a year ago and I'm still at a loss with getting it running properly. The only thing (majorly) wrong with it when I brought it home was that the monitor was shot. You could still see the game (all the colors were fine) but it was beyond blurring & it had the worst burn-in I've ever seen on a monitor. I've been trying to get monitors to work ever since.

I know Rampage is listed here as using a K7000 monitor... and in the manual lists 19K4901D, 19K4906D, 19K4951D, and 19K4956B as possible monitor models.

At one point, I even tried one of those GBS CRT-VGA conversion boards & a old pc monitor, but got the same results as now, with a new CRT monitor.

Because it's a dual-sync game, I've tried using a custom sync compositor board, which did indeed help stop the rolling that normally wouldn't quit.. but the colors are always messed up.

I have a brand new dual sync monitor from Visual Displays model 1119K (I have the same in my Dig Dug and it works fine) that I've tested using my Tetris pcb and the game looks fine. Better than fine, it looks great actually.

When I hook it up to Rampage, IF I can get the picture to stop rolling vertically (via a sync compositor board), the colors are all messed up. I can play the game (can't see very well, obviously) and the sound is fine.

Here's a post from another thread I had in the monitor section here:
Ok well... I'm still really frustrated. Using the sync compositor board that Gibo provided the design for I was able to finally get a picture that stood still...

I tried degaussing it, but no improvement was made. The screen is still really dark/colors are really dark...

downsized_0121112115.jpg

The odd thing is the very bottom and bottom left areas seem to have the colors looking fine, if not close to fine. The rest of the screen, as you can see, is all messed up color-wise. Does anyone have any ideas here on what is going wrong with this? The game plays fine, sounds fine.
Supposed to look like this:
action_arcade.gif

And yes, I've tried adjusting the pots on the monitor & the monitor remote... and the best I can get is what you see above.

Now, I've tried 3 (yes 3) different Rampage PCBs. The owner of the two I just got (from a KLOV'er) was fairly certain they were working fine. And seeing as all 3 pcbs are showing the exact same symptoms on the screen... it leads me to believe that SOMEHOW the video & sync signal from the Rampage pcbs doesn't jive with this monitor (which works fine on Dig Dug and Tetris).

And just to be sure I ran continuity tests on all the video signal wires that are OG on Rampage... they're fine, no shorts.

Does anyone have a Rampage that they can check their monitor on or if anyone has information about Rampage's video signal is out there? And/or why this monitor works fine with other games, but not with Rampage?

I've considered the possibility that all 3 Rampage boards are having the same failure, but it doesn't seem logical.


Help!
 
looks like a degaussing issue to me. Do you have any other games? In most cases the majority of these games use monitors that are compatible each other. You could run an extension from the rampage video out to the input on a different monitor to see what you get.
 
looks like a degaussing issue to me.
Nope, tried that a couple times.

Do you have any other games? In most cases the majority of these games use monitors that are compatible each other. You could run an extension from the rampage video out to the input on a different monitor to see what you get.

I'm going to try this in about an hour. Stayin' up late tonight, I guess.
 
I had a friend with a similar problem with a Mario Brothers. pulled the board and checked each one of the removeable chips and found that one had been installed wrong. it was off by one space leaving to legs hangin in the wind outside the end of the socket. Once it was removed and reinstalled with all the chip legs inserted into the socket the problem was solved.
 
I didn't see you mention it or not, but have your tried a new wiring harness? Just trying to figure out what the common denominator is with each board tested.

Also, have you tried a different game on that monitor in that cabinet?
 
you said you got the monitor fro visual displays. People were having major problems with their monitors...

http://forums.arcade-museum.com/showthread.php?t=136646&highlight=visual+displays

Now that you said its from them, I would say thats your problem. Possibly a bad shadowmask in the tube.

Good news Mr. Bill... I'll send you a PM in a second.

To everyone else-

I swapped monitors with my Rolling Thunder and things look fine. It appears that for some really odd reason, the monitor I have (which works with everything else) doesn't handle the Rampage signal properly.
 
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