Cannot get monitor to display correct

Unreal2k5

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Hello everyone. My NFL Blitz 99 Game was working fine. This morning I turned it on and the screen was all scrambled. I have gotten it better but still cannot get a clear picture. I have been messing with the controls for the monitor for the past 5 hours. Is there anything else I can check where the problem is.

This is the best I have been able to get it.

http://www.youtube.com/watch?v=vx0Odw3I1LM

http://www.youtube.com/watch?v=VRBPa2P6wog

Im at my wits end on this and I don't know what to do. Anyone local in the fox valley that can stop by and help me with this.
 
No I have never capped a monitor before. I don't know how yet. All I know is it worked fine this morning I turned if off turned it back on and the screen was scrambled. thats when I started messing with it. I dont even know what kind of monitor it is all I can see in from the back of the monitor is that it is a RCA monitor in a showcase cabinet.
 
RCA is the tube type. Take some pictures of the monitor for us so we can see what kind you have. Doesw it have a remote adjustment board on it. Its usually under the control panel.
 
yeah, I'm a little stumped on what kind of monitor that would even be, lol. I know those older showcases came with Polos... Polos used RCA tubes... but I've seen larger Wells monitors with RCA tubes as well.

take a picture of the circuit board at the base of the monitor frame. make sure the components are visible. if its a Wells you might get lucky and find a model # tag along one of the edges of the chassis board like a 33Kxx (the xx's being your model #)

I don't know off-hand if Wells made a K7500 in 33", their site says there was only a 25" model, but that's bullshit, there were 27" ones too. there was also a 39" K7600 that was switchable like the U5000 (not sure where the math goes into play there with the screen size)

I mention the K7500 because they have the horizontal hold pot on the chassis itself that might even be slightly adjusted out of whack, and it's not on the remote board. if you open up the front service panel where the game board is installed at and find the remote board mounted in there (probably above the power supply), take a picture of that too, that'll help as well.
 
Pictures

Ok I took some pictures today not the greatest but its all I have time to do before work.
 

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Come to think of it the problem started after I pulled on one of the white wires to unhook it to redo it. I was trying to figure out why I didn't have sound. The white wires on the second and third to last pictures IM000714.JPG and IM000715.JPG. Maybe I pulled something loose? or broke something.
 
On a plus side I did find that one of my friends knows a little about restoring arcade games. He is coming over on Saturday to see if he can help me. He's no expert but I might be able to learn a thing or two since I'm still new at this.
 
well, it's a Sharp Image monitor, but I don't know a thing about those. :)

why do you have 2 JAMMA harnesses in there? that's weird. your machine's entire arrangement is different than my showcase. lol

I can't tell what white wires you're talking about, or what exactly you were trying to "redo". if you have H-Hold and V-Hold pots on the remote board, I'd try tinkering with those a little bit to see if anything changes.

and WTF is that power switch on the remote board for? I can't read what it says.
 
well, it's a Sharp Image monitor, but I don't know a thing about those. :)

why do you have 2 JAMMA harnesses in there? that's weird. your machine's entire arrangement is different than my showcase. lol

I can't tell what white wires you're talking about, or what exactly you were trying to "redo". if you have H-Hold and V-Hold pots on the remote board, I'd try tinkering with those a little bit to see if anything changes.

and WTF is that power switch on the remote board for? I can't read what it says.
Don't know why there are 2 Jamma harnesses in there either I was wondering the same thing. The person before me cut all the cables going up into the monitor. I had to strip and connect all of them. I do have a h-hold and a v-hold on the remote board and I have been tinkering with them I can almost get it but still not able to get it to sync on. The switch on the remote board is a degauss button. From my amateur looking at things I'm guessing it might be with the wiring to the remote board or possibly the board to the monitor. Since I really don't know what I'm doing with it. I will wait till Saturday when my friend can take a look at it. On a plus note I found 2 dollar bills and a dime in the machine tonight.
 
just an update

Just an update in case inquiring minds want to know...

I had my friend play around with it a little bit but he was also unable to get the picture to hold. I wasn't expecting much since we are both amateurs at this.

In the mean time I won a NBA JAM arcade board off of Ebay to try in the cabinet to rule out any video card issue on the board.

When the screen came up it looked like the pictures hold was still out of sync. I went for the remote board to adjust it and the screen went black and now the monitor board just clicks with no picture. Yea Me! oh well now I can say it really is broke.

I plan on doing my first discharge on the monitor this weekend and I think I am going to send the monitor board to Chad to see if he is able to fix it.

Its my only cabinet and I don't feel like screwing it up anymore so I figure I will have someone with experience look at it for me.
 
When the screen came up it looked like the pictures hold was still out of sync. I went for the remote board to adjust it and the screen went black and now the monitor board just clicks with no picture. Yea Me! oh well now I can say it really is broke.

Well, I was going to say that you have a bad or missing video ground which is why it wont SYNC. Now you have a bad horizontal output and/or a bad flyback.

That sucks man.

Matt
 
Well I just looked at the wiring under my cabinet and the ground was discoed. I guess that explains why my monitor doesn't turn on anymore. guess I will have to wait till this weekend to take it apart. Thats what I get for not waiting till the weekend and taking my time.
 
Update 7/25/10

Ok I did my first Monitor Discharge and was able to get my monitor board out. Whew worked myself up for nothing not even a pop.

I am going to send the board in since I think I fried out the flyback.

Anyway I did notice a black wire in the back of the cabinet that looks to have been cut.

I have attached pictures of the cut wire.

The harness that the cut wire might go into and where the harness plugs into the board.

Could have that been the reason I could not get my monitor to sync?

Thanks any advice is greatly appreciated.
 

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That wire is just an extra wire that looks to have been cut back by whomever installed the Blitz kit into the cabinet. The wire you need to follow back from the monitor to the logic board is the white w/black stripe. Thats your video ground.

Matt
 
That wire is just an extra wire that looks to have been cut back by whomever installed the Blitz kit into the cabinet. The wire you need to follow back from the monitor to the logic board is the white w/black stripe. Thats your video ground.

Matt

Cool thanks I will look into that.
 
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