Multiboard Question

Zud

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I have a 4-in-1 board in a cab and it works fine.
I have a generic JAMMA game board and that works too.
When I plug a new 48-in-1 board I cannot get it to work. Nothing comes on, no screen, no marquee. The 48-in-1 board does work in another cab that I own.

I am stuck as it makes no sense why it wouldnt work in that cab? :confused: :mad:
 
Well, then. Plug it in to this connector, then post a pic of the board side with it connected. Maybe I'll spot something....
 
Ok I will check voltages.

It is just weird that a 4-in-1 works and a regular JAMMA game like Klax works, but the 48-in-1 doesnt work. :confused:
 
Power

I have a 4-in-1 board in a cab and it works fine.
I have a generic JAMMA game board and that works too.
When I plug a new 48-in-1 board I cannot get it to work. Nothing comes on, no screen, no marquee. The 48-in-1 board does work in another cab that I own.

I am stuck as it makes no sense why it wouldnt work in that cab? :confused: :mad:

No marquee? Seems like for some reason there is no power going to anything with that symptom. That should not be related at all to the board swap. Unless the interlock is out because the back door is off. I dont want to insult you intellegence though.
 
No interlock on this cab.

Any JAMMA board I put in works, except for the 48-in-1 board. The 48-in-1 board does work as I have tested it in another cab I have. What an enigma! :confused:

I will only have about 1/2hr tonight when I get home to see if I can get this fixed before someone comes to look at it. Hopefully he stills buys the cab with just the 4-in-1 board so I still get cash. :D
 
Confused

No interlock on this cab.

Any JAMMA board I put in works, except for the 48-in-1 board. The 48-in-1 board does work as I have tested it in another cab I have. What an enigma! :confused:

I will only have about 1/2hr tonight when I get home to see if I can get this fixed before someone comes to look at it. Hopefully he stills buys the cab with just the 4-in-1 board so I still get cash. :D

Why would the board matter as far as the marquee goes?
 
Why would the board matter as far as the marquee goes?

I'll have to double check that. I was in such a rush last night. I dont think I was getting power to the marquee or coin door, but now I am not so sure.

Of course anything you think will be a simple swap out turns out not to be the case. I have to just step back, take a deep breath and say: I love this hobby. :p
 
FWIW, what are the voltages going into the 48-in-1? My 60 in 1 board HAS to have like 5.5 in order to work right.

As far as the marquee....that's odd.

Just out of curiosity, you're not plugging in the jamma and the computer plug at the same time are you? YOu're not supposed to do that.
 
I have a 4-in-1 board in a cab and it works fine.
I have a generic JAMMA game board and that works too.
When I plug a new 48-in-1 board I cannot get it to work. Nothing comes on, no screen, no marquee. The 48-in-1 board does work in another cab that I own.

I am stuck as it makes no sense why it wouldnt work in that cab? :confused: :mad:

Check to make sure whoever installed the JAMMA harness hooked up all the ground and voltage connections. I think their are 8 ground wires,4 +5V and 2 + 12 volt wires, might be more but sometimes people only hook up what's needed for a certain board and another board might need the ground or power that they didn't hook up. Couldn't hurt to check. Should not affect the marquee.
Sam
in Virginia
http://members.cox.net/severlander/index.html
 
5.5

FWIW, what are the voltages going into the 48-in-1? My 60 in 1 board HAS to have like 5.5 in order to work right.

As far as the marquee....that's odd.

Just out of curiosity, you're not plugging in the jamma and the computer plug at the same time are you? YOu're not supposed to do that.

5.5 is a little high. You must have a voltage loss in the harness or the edge connector and you are checking at the power supply it's self. I bet if you test the voltage on one of the chips it will be more like 5.1v. That thing would be doing dome screwy things if you had 5.5v on the board.
 
Ok I did a test and everything lights up and plays blind on Board A in Cab A. I just cannot get the monitor to light up. Swap the board (Board B in Cab A)and it works fine. If I take Board A and put into Cab B it works. Volatages looked fine, but I will test again.

Edit: Volatage is +5.13
 
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Are you running both as CGA or VGA? Both have the same sync wiring? Turn up the brightness on the blank screen?
 
Are you running both as CGA or VGA? Both have the same sync wiring? Turn up the brightness on the blank screen?

I am using an arcade monitor not a computer monitor.
Brightness is good as other boards work fine in that cab.

Would this 48-in-1 have a different sync just in this cab and board, but not effect another board in this cab? That would be strange.
 
Not usually. JAMMA is composite negative sync. There is no concievable reason why a monitor wouldn't "turn on" just because of the board, although some newer monitors require a signal before "turning on".

Are you getting any lights on your 48-in-1 when you turn the cab on?

And I'd still like to see a pic of this board hooked up in this cab that it doesn't work in....


EDIT - and they DO make arcade monitors that work with a VGA signal - D9200, U3100, etc....
 
Not usually. JAMMA is composite negative sync. There is no concievable reason why a monitor wouldn't "turn on" just because of the board, although some newer monitors require a signal before "turning on".

Are you getting any lights on your 48-in-1 when you turn the cab on?

And I'd still like to see a pic of this board hooked up in this cab that it doesn't work in....


EDIT - and they DO make arcade monitors that work with a VGA signal - D9200, U3100, etc....

Yeah I forgot about the VGA monitors. :001_ssuprised:

I do get lights on the PCB and the board will play blind and coin up.

Here are some pics. The screen is with the 4-in-1 board in it. The 48-in-1 board looks identical to the 4-in-1.
 

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