Possible causes of this monitor issue?

machfelon

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Everything is compressed down. Have adjusted all knobs on monitor and reseated all chips and neck boards.

Cant get the monitor image to expand.
 

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I believe that's called partial vertical collapse. What chassis? A capkit might fix that.
 
What monitor? A Cap kit won't fix a collapse.... That is a transistor...
 
Appears to be an RCA tube with Wells Gardner chassis (19 inch monitor) I'll Im seeing is serial number stickers with WG infront. Didnt see any model number on it.
 
Appears to be an RCA tube with Wells Gardner chassis (19 inch monitor) I'll Im seeing is serial number stickers with WG infront. Didnt see any model number on it.

Look for a board number inked onto the HV board; should be in the form "Pxxx" or "PDxxxxxx". Look it up here
 
What monitor? A Cap kit won't fix a collapse.... That is a transistor...

Yes it will. Done it before.

Wouldn't be surprised if this is cold solder or burned traces (depending on the model), but the transistor is the place to start. Could even be a bad resistor, diode, yoke, etc...
 
discharge the monitor tube before removing the chassis so you dont get a bad shock http://www.therealbobroberts.net/sb.html

then you can use a soldering iron to reflow any cold solder joints that inhibit electron flow for proper operation. if you look closely, you can see the cold solder joints. sometimes it looks like a crack or a ring around the leg of a capacitor or header pin(what the connector connects to)sometimes the cold solder gets so bad, the header pin can fall right out

could be a more complicated issue where a diode, resistor or transistor needs to be tested because it has gone bad. sometimes a capacitor has gone bad too
 
I've seen this monitor in-person (I sold the Mr. Do to Machfelon). The monitor stopped working after he moved the game to a new spot in the arcade. I suspect a cold solder joint or connection issue, as it was working perfectly until moved. This lead me to believe that nothing is actually "broken".

Machfelon, is the monitor vibration sensitive? Can you tap on the cabinet and get the image to change? Has it worked at all since you moved it?

The monitor was missing identifying labels, but was tracked down to be a K7000 of some variety. These monitors are notorious for cold solder issues (the chassis run hot). It's in a vertical frame. I have a very similar monitor that is a K7191 (?).

I would review the sticky about K7000's: http://forums.arcade-museum.com/showthread.php?t=134818

Also, this issue might do better in the Monitor sub-forum: http://forums.arcade-museum.com/forumdisplay.php?f=43
 
I've seen this monitor in-person (I sold the Mr. Do to Machfelon). The monitor stopped working after he moved the game to a new spot in the arcade. I suspect a cold solder joint or connection issue, as it was working perfectly until moved. This lead me to believe that nothing is actually "broken".

Machfelon, is the monitor vibration sensitive? Can you tap on the cabinet and get the image to change? Has it worked at all since you moved it?

The monitor was missing identifying labels, but was tracked down to be a K7000 of some variety. These monitors are notorious for cold solder issues (the chassis run hot). It's in a vertical frame. I have a very similar monitor that is a K7191 (?).

I would review the sticky about K7000's: http://forums.arcade-museum.com/showthread.php?t=134818

Also, this issue might do better in the Monitor sub-forum: http://forums.arcade-museum.com/forumdisplay.php?f=43

No even before I moved the game it looked like this one day. Then after a few seconds the screen expanded. Now after moving it does this all the time. I have tapped the side a couple times at first and it fixed it. (Before the move). Doesnt do anything now.

Talking about cold solder issues I would have NO IDEA where to begin. Have no soldering gun and no experience soldering.
 
Talking about cold solder issues I would have NO IDEA where to begin. Have no soldering gun and no experience soldering.

In that case, the best way to proceed would be to Radio Shack, and buy a soldering iron and some solder. On the way home, pick up a cold six pack of beer from a convenience store. Call up a friend that knows how to solder and offer him the beer in exchange for fixing the monitor.

But seriously, it's not that hard. Discharge, and pull the chassis out, and investigate the solder joints. You'll probably see some that are in visibly poor condition. Practice soldering on some junk boards first, it isn't that hard, and it's a good skill to learn (especially if you own arcade games). Or, if you'd rather not do all that, find someone local and use the above procedure.

-Ian
 
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