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Author Topic: Problem with arcade monitor and jpac  (Read 1881 times)

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maximumg

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Problem with arcade monitor and jpac
« on: October 24, 2015, 06:24:39 pm »
Hi guys,

I have a problem with my arcade monitor and jpac setup and hope you can help me solve it.

My arcade cab has a goldstar monitor

I connect everything up and set my graphics card to 15khz with soft15khz.

When the PC turns on I get a green screen (pic1) and when it boots and gets into windows I can see the image on the background (still green) as you can see on pic 1. When removing the vga cable from jpac and connect it to my pc monitor I get pic 2

Jpac shows green lights constantly on

Can someone help me to resolve this?


Thanks
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menace

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Re: Problem with arcade monitor and jpac
« Reply #1 on: October 25, 2015, 08:25:51 am »
Do you have a jamma board you can test the monitor on?  This would at least tell you if the problem is on the jpac side or the monitor side--I've never used soft15khz so I have no idea about settings etc...
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maximumg

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Re: Problem with arcade monitor and jpac
« Reply #2 on: October 25, 2015, 08:47:01 am »
Yes when I connect the Jamma board the monitor is ok.

It's something to do either with jpac or the vga card.

Are there any settings to play with?  I just enabled soft15khz
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maximumg

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Re: Problem with arcade monitor and jpac
« Reply #3 on: October 25, 2015, 04:11:05 pm »
Please see attached image for monitor model
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menace

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Re: Problem with arcade monitor and jpac
« Reply #4 on: October 25, 2015, 05:18:24 pm »
Not ruling out jpac but I would be way more suspect of the soft15khz and videocard since it was never designed to run the monitor in question...

Whats the vid card?
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maximumg

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Re: Problem with arcade monitor and jpac
« Reply #5 on: October 25, 2015, 06:18:48 pm »
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grantspain

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Re: Problem with arcade monitor and jpac
« Reply #6 on: October 25, 2015, 06:37:18 pm »
tube is goldstar,monitor is not
remove the video input,do you still get a green screen-if so either the green cut off is too high or the green drive circuit has a fault

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maximumg

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Re: Problem with arcade monitor and jpac
« Reply #7 on: October 26, 2015, 07:28:21 am »
When i remove the monitor i still get a green screen but when i connect it to my jamma neo geo board the screen is fine.

I thought maybe the wiring of my jamma harness is not the one needed by jpac but i checked jpac website and the wiring is as needed by jpac......

my jpac when connected shows a green led for selfcheck and sync ok but shows an orange led for sync in... is that normal?
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maximumg

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Re: Problem with arcade monitor and jpac
« Reply #8 on: October 29, 2015, 03:15:50 pm »
Ok it seems that it was a software issue.
I tried with powerstrip and I can see my desktop but only the top half

Are there any other options to configure this in powerstrip? I used the 640x480 arcade resolution.

And the green color "mask" still remains.
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