720 monitor issue *warning pictures posted*

[redcoats]

I got my 720 up and running but I need some help from someone with some monitor expertise. The colors are pretty good, doesn't look like any burn in. I could adjust the colors more because they are a little off. The problem is with the horizontal stretch. If I turn the knob one way the picture goes completely small, if I turn it back the other way it won't stretch the full length of the screen. How can I get this picture to cover the full spectrum of the monitor? The horizontal stretch will not stretch the picture any further then you see in the pictures below. Any help would be appreciated. Thanks

[SirPeale]

One of the first things I'd suggest would be doing a cap kit.  However, with your brief experience with these machines, I'd let a pro do it.

[MonitorGuru]

1) CapKit -- you have a horizontal scrunching issue on the right edge.  A CapKit should help fix that, AND possibly help with the width.

2) Change the capacitor value in the horizontal defelection section to widen it. Ken Layton can provide more info I'm sure.

[redcoats]

One of the first things I'd suggest would be doing a cap kit.

[redcoats]

Here is a picture of the board with all the adjustments on it. If this board was replaced would that fix the problem? Considering the verticle on this board can stretch either way just fine but the horizontal doesn't quite work the same. I figured if this board was a cheap replacement maybe I could do that?

[Ken Layton]

And the make & model of the monitor in question is....?

[redcoats]

And the make & model of the monitor in question is....?

Oops sorry Ken. It is a Wells Gardner 25K7101.

[MonitorGuru]

Here is a picture of the board with all the adjustments on it. If this board was replaced would that fix the problem? Considering the verticle on this board can stretch either way just fine but the horizontal doesn't quite work the same. I figured if this board was a cheap replacement maybe I could do that?

I'm sure the board and controls are perfectly fine. They're just potentiometers that connect to the main circuitry. The chance of them being bad is very very small, especially since they're mounted flat. If adjusting each results in a change in the video, even if it doesn't go to full extremes, if it still moves, then then controls are good.

[redcoats]

Thanks for the info monitorguru. I really wouldn't know what I was doing if I tried this myself, so I should let a pro do it. The problem is finding someone in my town who works on monitors?

[Ken Layton]

First thing you need to do is install a k7000 series capkit. Then see how the picture looks. If after installing the capkit and adjusting the width coil on the monitor main board the picture is still too narrow then you need to change the value of capacitor C38. Bob Roberts sells a "Width cap" kit with assorted values for changing the width range.

In general if the remote adjustment board had a bad pot on it you would loose a complete function. In other words if say the "vert size" pot was broken or had a harline crack in it the picture would simply collapse into a single horizontal line across the screen. Most Wells-Gardner monitors do not have a width or horiz size control on the remote adjustment board. This adjustment is usually a standup coil on the main monitor board.

[Ken Layton]

Look to spend around $50 to have someone install a capkit.

[redcoats]

First thing you need to do is install a k7000 series capkit. Then see how the picture looks. If after installing the capkit and adjusting the width coil on the monitor main board the picture is still too narrow then you need to change the value of capacitor C38. Bob Roberts sells a "Width cap" kit with assorted values for changing the width range.

In general if the remote adjustment board had a bad pot on it you would loose a complete function. In other words if say the "vert size" pot was broken or had a harline crack in it the picture would simply collapse into a single horizontal line across the screen. Most Wells-Gardner monitors do not have a width or horiz size control on the remote adjustment board. This adjustment is usually a standup coil on the main monitor board.

Thanks for the reply Ken. I have never worked on a monitor before, would this be something for a first timer to try or should I buy the parts and have someone else install them? My biggest problem would be finding someone in my area that does this work. I live in a rinky-dink town that thinks it is still 1980

[redcoats]

Oh also one more question. Since I don't see any burn in in the monitor, once fixed, should the picture look good as new?

[Ken Layton]

It's always best to have the work done locally if at all possible. Monitor chassis (and complete monitors) don't survive shipping across country without breakage usually.

I'm in the sticks of Olympia, Washington on a slow dialup 28k connection here.

[redcoats]

I'm in the sticks of Olympia, Washington on a slow dialup 28k connection here.

Lol, so you understand my pain. What kind of buisness should I look for that would work on this monitor?

[Ken Layton]

Sometimes you can convince a local game operator to let one of their techs work on it. Look in the Yellow Pages under "Amusement Devices".

[DaveJ-UK]

I have never worked on a monitor before, would this be something for a first timer to try or should I buy the parts and have someone else install them? My biggest problem would be finding someone in my area that does this work. I live in a rinky-dink town that thinks it is still 1980

If you read up on the subject before hand, it's pretty straightforward.

I've done a few cap kits now and I knew nothing about monitor repair when I did the first.

You can practice soldering on an old electronic toy or something and then just read up on how to discharge the tube safely before you disconnect everything and remove the PCB to work on it.

Just my $0.02

[dabone]

Why don't you post where you are?

Maybe someone here is close enough to you to do the work..


Later,
dabone

[redcoats]

Why don't you post where you are?

Maybe someone here is close enough to you to do the work..


Later,
dabone

I live in a little place called Bullhead City Arizona, it's about 90 miles outside of Las Vegas.

[lostboy4480]

I am in Las Vegas and am trying to find someone local to repair my D9200,  If I find anyone I will post here, no exactly local to you but definatly within driving distance.

[Ken Layton]

Happ Controls has their monitor repair center in Las Vegas!

Happ Controls
6870 South Paradise Road
Las Vegas, Nevada 89119
Phone: 1-800-831-0444 or (702) 891-9116
www.happcontrols.com
Services all brands

Here's another monitor repair center:

Casino Tech
2470 Chandler Ave. # 7
Las Vegas, Nevada 89120
Phone: (702) 736-8472
www.casinotech.com
Services most brands, but specializes in Kortek.

[lostboy4480]

Thank you very much Ken, Didn't realize that the local Happs did repairs