JAMMA 2-in-1 switcher - wont switch audio

gamefixer

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Every time I try to use one of these stupid things they dont friggin switch audio. What in the hell am I doing wrong???

sku_376199_1.jpg


First of all the piece of garbage seems to need power on that plug next to the yellow relay at the lower part of the board. Why not just take it from the JAMMA connector? Ugh... Even when I apply power to the connector the stupid piece of crap will switch video and controls but NEVER switches audio.

What the hell????

Anyone else have any plug and play luck with these things?
 
For audio-

JAMMA is just outputting signals from its source, the end result is amplified after
and beyond the JAMMA output... That could be your issue. Depends on what
games you are using with it...

For input power-

It needs external power to compensate for the load for multiple inputs. Without
external voltage, the load would lower the +5 voltage (and amperage) below
min requirements.
 
https://www.pyb-arcade.com/products...harnesses-remote-gbs-8118?variant=12224786561

Technical Notes: This swicher will not switch the video with the 400-in-1 Pandoras V2 PCB board using VGA video. In order to work with this board the VGA video need to be manually switched using a VGA switch box. Short of the video needing to be switch on a seporate switch all other functions will swich properly. If you are using a CGA tube monitor then there is no issues.
Monitor: If you are using a CGA monitor then you simply wire the monitor off of the Jamma harness, If you are using a VGA monitor then you have to set your Jamma boards to VGA then plug both of your Jamma boards VGA ports from the boards to the VGA input of the switch using a male to male VGA cord.
 
For audio-

JAMMA is just outputting signals from its source, the end result is amplified after
and beyond the JAMMA output... That could be your issue. Depends on what
games you are using with it...

For input power-

It needs external power to compensate for the load for multiple inputs. Without
external voltage, the load would lower the +5 voltage (and amperage) below
min requirements.

JAMMA audio is amplified on the birds. Two turtles birds in this case. Power is not only being supplied directly to the boards but also to the JAMMA switcher.

I don't understand how these things pass QC. of the 5-6 I've installed over the past few years I've ALWAYS had to mess with the relay that switches audio.
 
https://www.pyb-arcade.com/products...harnesses-remote-gbs-8118?variant=12224786561

Technical Notes: This swicher will not switch the video with the 400-in-1 Pandoras V2 PCB board using VGA video. In order to work with this board the VGA video need to be manually switched using a VGA switch box. Short of the video needing to be switch on a seporate switch all other functions will swich properly. If you are using a CGA tube monitor then there is no issues.
Monitor: If you are using a CGA monitor then you simply wire the monitor off of the Jamma harness, If you are using a VGA monitor then you have to set your Jamma boards to VGA then plug both of your Jamma boards VGA ports from the boards to the VGA input of the switch using a male to male VGA cord.

Thanks for the reply. I'm only having issues with audio switching. Video is fine.
 
looks like I'm not the only one that has problems with these crap boards after all.
 

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figured it out. Pics and explanation to come.

Piece of garbage.
 
OK, so heres the deal. The RF remote controls a relay that latches open/closed inside of this black box.

There is a header where the toggle switch would connect if you werent using the RF remote but happens to also be connected to the relay in that box. The inside pin changes state depending on which game you want to play.

Remove the little transistor in the pic attached and connect the inside pin from that header in the pic above to the center pin of the transistors former location.

Use the relay in the black box to drive the relay on the board!! Its stupid, but it works as advertised.
 

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OK, so heres the deal. The RF remote controls a relay that latches open/closed inside of this black box.

There is a header where the toggle switch would connect if you werent using the RF remote but happens to also be connected to the relay in that box. The inside pin changes state depending on which game you want to play.

Remove the little transistor in the pic attached and connect the inside pin from that header in the pic above to the center pin of the transistors former location.

Use the relay in the black box to drive the relay on the board!! Its stupid, but it works as advertised.
So I received an old 2009 revision of this board recently and had this issue. Found this post through google, sure enough it works! Thanks for saving me the headache of trying to get a refund through AliExpress, it's so much easier to just keep it and use it now.
 
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