Dragon's Lair Fans - Arcade Lifestyle
General Chat => Technical Area => Topic started by: Blanbek on June 02, 2014, 02:01:22 PM
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Hello,
I would like to make a jamma harness to scart tv ?
Is there a correct diagram to do this?
I have one, but I can't seem to have one stabilized picture ?
here is the link where I found the diagram
http://www.arcade-system.com/index.php/articles/36-montage-de-composants-conversions-a-creations/433-supergun-construisez-votre-propre-acade-systeme?start=3 (http://www.arcade-system.com/index.php/articles/36-montage-de-composants-conversions-a-creations/433-supergun-construisez-votre-propre-acade-systeme?start=3)
Thanks...
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For my cable I have used this one:
http://www.geocities.ws/podernixie/htpc/cables-en.html
and it worked 'out of the box' :)
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I'll give it a try tomorrow, thank you!
And say what.... ::)
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Looks like a sync problem
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Could be a confused sync pin. They're crossed on the scart-plugs, it's either pin 19 or 20.
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On pin20 sync the value of the resistance is different from me, 390ohms and 1k.
My diagram is less complete.
The project is 60in1 pcb jamma to tv
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Done this with quite a few tvs and never needed any resistor.
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Done this with quite a few tvs and never needed any resistor.
+1
Done this with more than...20 TV, and never needed any resistor too! 8)
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Hello,
it works, but then what is the difference with transistors resistors?
the image is a bit on the left side...
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Depending on the tv model you'll have to find out whether there's a service mode (access via remote) or look on the chassis if there's a pot for horizontal shift.
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Tv Goldstar CB-20A86 chassis PC53A.
I can not find a correct service mode but I have a .pdf Explains horizontal adjustment " the H shift control VR401 "
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;)
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What transistors? Or do you mean resistors?
I just can say that I have tried it on a Grundig TV and I had sync issues without the resistor.
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Hello,
it works, but then what is the difference with transistors resistors?
the image is a bit on the left side...
I did not take any risks, I did the wiring with resistors
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http://forum.arcadecontrols.com/index.php/topic,77370.0.html
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I used the diagram from luigi
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I just bought one of these, hope it works, took the lazy route.
http://www.ebay.co.uk/itm/JAMMA-TO-SCART-CABLE-EUROCONECTOR-for-ARCADE-JAMMA-system-/331241443936?pt=LH_DefaultDomain_0&hash=item4d1f875260 (http://www.ebay.co.uk/itm/JAMMA-TO-SCART-CABLE-EUROCONECTOR-for-ARCADE-JAMMA-system-/331241443936?pt=LH_DefaultDomain_0&hash=item4d1f875260)
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Hmmmm. A hell of a price and you can't see what's inside the scart-plug. As I mentioned before: there are many tvs that require special treatment. Wether it's the placement of resistors on sync and/or the rgb-signals or the full ground-chain on all gnd-pins on scart. Some tvs like it, some don't so don't expect a plug and play solution. But maybe you are lucky and it works out of the box but keep them soldering iron hot when it arrives and be prepared to optimize things afterwards ;)