Problem with GBS-8200 HD 9800 V5.0

White Devil

White Devil

Hardened Shock Trooper
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Nov 26, 2012
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I got a few of these and I get this same problem with each kne and I tried them on 3 different monitors and 3 different cables.

Here's the video of the problem

http://youtu.be/_8nbDNI3bcw

I tried it on a CRT, LCD and a projector.

The exact model of the converter is GBS-8200 HD 9800 V5.0 from 5.15.2014
 
jacket

jacket

n00b
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Mar 5, 2014
Posts
16
I remember having the same thing going on when I got my GBS-8200. I can't say how I fixed it but it involved messing with the settings in the scaler and my lcd monitor.
 
K

kotter

n00b
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Nov 14, 2014
Posts
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Looks like it could be a sync issue and if you can't stabilize it with the settings you might want to consider using a sync cleaner?
Afaik these boards are made to accept the arcade signals as-is but my V4.0 doesn't. I ended up putting a lm1881 circuit to clean up the sync and now it runs smoothly with all my systems.
 
White Devil

White Devil

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Joined
Nov 26, 2012
Posts
448
kotter said:
Looks like it could be a sync issue and if you can't stabilize it with the settings you might want to consider using a sync cleaner?
Afaik these boards are made to accept the arcade signals as-is but my V4.0 doesn't. I ended up putting a lm1881 circuit to clean up the sync and now it runs smoothly with all my systems.
Click to expand...

Is there a tutorial somewhere on how to add one of those?
 
K

kotter

n00b
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Nov 14, 2014
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Here's a fairly good tutorial on how to build the circuit: http://www.mmmonkey.co.uk/console/other/sync.htm
So you'd plug the sync from your machine into the "composite video input" and then you connect the GBS sync wire to "Composite sync output" via a 680ohm resistor.
The components are cheap to get and easy to assemble if you've got some basic soldering skills.

That's my suggestion though I'm not as savvy as the other gents around here so you might get some better ones that are easier to try first :)
 
Xian Xi

Xian Xi

JammaNationX,
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Dec 1, 2005
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27,750
Did you try using the auto sync feature? Hold the down button for 5-10 seconds then let go. Sometimes you need to do it more than once.
 
White Devil

White Devil

Hardened Shock Trooper
Joined
Nov 26, 2012
Posts
448
Xian Xi said:
Did you try using the auto sync feature? Hold the down button for 5-10 seconds then let go. Sometimes you need to do it more than once.
Click to expand...

I did, didn't seem to do much
 
Last edited:
purple

purple

Geese's Thug
Joined
Aug 7, 2007
Posts
276
I was having same issue, adjusting rgb pots fixed it. I think rgb voltages was too high.
 
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