Wells Gardner D9200 HELP!

[tivogre]

When I went downstairs to boot up my ARCADE cabinet tonight, I was met with much unpleasantness...  The image on my WG D9200 is very washed out (dim) and green looking.

I tried adjusting the monitor controls - no help

I tried a different VGA cable - no help

I tried my laptop through (both) VGA cables - no help

No matter what I try, there is just dim, green image.  It looks this way from the bios boot screen on into windows.

Any ideas what might have happened / how much to fix?

I've never dealt with WG repair... how are they?

[tivogre]

Well, now it's worse... I get NO picture anymore.... Just black screen.

I can still "hear" the monitor turn on.... just no image.

[Ken Layton]

Was this monitor working fine before and this just happened? How old is this monitor?

If necessary, telephone the tech support department at Wells-Gardner.

[tivogre]

It seemed to be working yesterday, although I do remember thinking that the colors looked very "saturated".

When I turned on the cabinet today, I had this dim green looking image.

Now, no image at all.

Definitely seems like something failed.

I've e-mailed WG Tech Support... just trying to tap into the experts here to get an "early prediction" as to what might be wrong and what WG repair procedures are like.

The monitor was purchased in September 2003, new, direct from WG.

[2600]

There was a problem that had the same symptoms as this I believe.  For some reason, the Monitor would lose it's default settings from the advanced OSD menu.  Retroblast wrote something about it at some time, basically warning you about it and to go into the advanced mode and write down all your settings.

Not sure if this is the problem, but I think it sounded familiar.  Let us know what the problem is once you find out.

[tivogre]

Well, 2600 was on the right track.

I found the info on how to bring up the factory OSD;   I was able to get a "reasonable" picture back by raising several of the values.

Unfortunately, a couple of the values I had to change to get even CLOSE to a reasonable picture were the SB and CB values that "affect all colors" and the instructions say not to change.

Now, given that I have a reasonable picture now, it's still "off"  I need to know what are appropriate values for the service menu settings.  I called Wells Gardner, and they wouldn't give me ANY values?!?  saying that they vary from monitor to monitor.

Is anyone with a D9200 willing to go into the menu and tell me what good "starting" values would be?

Does anyone understand these settings well enough to help me get back to normal?

At this point, I'm just thankful it doesn't appear dead or irreversible...  BUT I will quickly forget that and grow tired of the weird shadings.

Thanks for any help!

[2600]

A better approach with Well Gardner may be asking them how they set them at the factory or if there is someone local who can do it.  I imagine they are correct that the values could very greatly from monitor to monitor.

That being said here's my values.  I take no responsibility if you damage your monitor and other then giving you these values I probably can't help beyond that.  Also, notice there are sample values in the document on how to get to the advanced mode, they are very different then mine.

Gain Mode
SB 190
R 132
G 113
B 220

Bias Mode
CB 75
R 136
G 150
B 181

OSD Mode
OC 75

OSD H 35
OSD V 16

I think that is all of them.  Let us know how it goes.

[tivogre]

Please clarify "damage the monitor:...

I would think the worst I could do is make the color balance worse;  then I could just go back to  where I am now.

Am I wrong about this?

How might I damage it?

Wells Gardner wouldn't say ANYTHING about values.... not even a ball park.  They just said set it by eye 

If anyone else has values, please post them.  I want to look for patterns / trends.

[tivogre]

Well, I played with it some more and ended up (for tonight anyway) at these numbers:

Gain Mode  My Value (2600's Value)
SB 165 (190)
R  114 (132)
G  120 (113)
B  128 (220)

Bias Mode
CB 100 (75)
R  58 (136)
G 102 (150)
B 121 (181)

OSD Mode
OC 85

At this point, everything looks pretty good.

I might tweak the numbers a bit more, if someone explains them well enough that I can do it in a methodical method vs. guessing.

Thanks for the help everyone!

[Jess--]

there will be no exact method of setting these values as they are the equivalent of the old Background (bias) and Drive (gain) pots that you used to find on the neck board of the tube. every monitor will be different due to slight differences in tubes, slight differences in gain values of the driver transistors.

I guess what I am saying is set it by eye....
for the bias settings I would say put a black screen on the monitor and increase the brightness until you have a light screen, then adjust your bias settings for the best GREY screen you can get.

for the gain settings put a white screen on the monitor and adjust the gain settings for the purest white you can get.

Colour balance tips...
Orange - yellow Tint = Increase Blue level / decrease Red / Green
Purple Tint = Increase Green Level / decrease Red / Blue
Cyan (sky blue) tint = increase red level / decrease Green / Blue