Carnevil has to have high voltage

newkid3

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I have a Carnevil that will not boot up unless you have the power supply 5 volts turned up to 5.6 volts. At 5.6 volts it will just reboot and reboot. If you go to 5.7 volts it will boot up and run longer. Anything under 5.6 volts and it will not boot. Does anyone know what could cause this. I have put in a brand new swithching power supply and it still does the same thing. Thanks
 
I have a Carnevil that will not boot up unless you have the power supply 5 volts turned up to 5.6 volts. At 5.6 volts it will just reboot and reboot. If you go to 5.7 volts it will boot up and run longer. Anything under 5.6 volts and it will not boot. Does anyone know what could cause this. I have put in a brand new swithching power supply and it still does the same thing. Thanks

Are you testing the voltage before or after you boot? If you test the voltage before you boot and then you boot the game, the load of the game can drop the voltage quite a bit. I had the same issue with an Area 51. Set the voltage to 5v and then boot the game. Then test the voltage while the game is booting. If it's low, then slowly turn the voltage up while the game is running to as close to 5 volts as you can get. If that doesn't work then there is something else going on.
 
I would like to believe I know what I'm talking about.

Seattle hardware can burn the JAMMA edge if run with the power supply set too high for too long.

the hard drive gets the majority of its power off the 12 volt supply, it's not going to drop the +5.
 
I would like to believe I know what I'm talking about.

Seattle hardware can burn the JAMMA edge if run with the power supply set too high for too long.

the hard drive gets the majority of its power off the 12 volt supply, it's not going to drop the +5.

Never said you didn't know what you were talking about. I have had the same problem with a game before. Could've been a bad edge connector and/or a power supply. Either way it fixed my problem.
 
edge connector is most likely the issue. Bypass it and I bet the board runs fine.

Dont run that board at 5.7.
 
Thanks for the replies. I can not set the power supply to 5 volts it will not boot up. I am not playing the game this way. That is why i am asking. I want to get this running right so it does not mess up something bad. Mecha i have read you PSU right up. What i need to know is if someone knows what could cause a problem of having to run the 5 volts high to get it to boot and run. Anything on game board or maybe hard drive. I have never seen a game with this issue. I will not run it this way. So from what was said that the hard drive would not be pulling the 5 volts down. It would have to be something else. I just do not know.
 
take a pic of the boards male edge connector and post it. I'm sure its in a bad way.

Is there a 4 pin molex connector just past the male edge connector? If so this is where you will begin the bypass surgery.

Hang in there... It will get working.

Where are you measuring the +5? At the power supply? Edge connector? Board some where?
 
Gamefixer thanks. How would i bypass the edge connector? Are you talking do this as a test or as a permanent thing?
 
I will take a pic of edge connector in the morning. I have been testing the 5 volts at the power supply and edge connector. I can not remember about a 4 pin molex connector. I will get that in the morning also.
 
I'll go into details tomorrow. Lets see the pics of the edge connector and figure out if you have that 4 pin molex on the board.

How are your soldering skills? You might need them to fix this.
 
FWIW, I've got a pacman handy that I can take a pic of tomorrow where we bypassed the bad edge connector. Thats what I meant about details.
 
need a picture of the edge connector. :)

there have been people that tapped +5 into the plug where the hard drive power harness plugs in, where the red wire goes specifically. the true permanent fix for a burned edge would be to effectively cut the old contacts off, open up the traces, and solder copper tape on. I've seen this done.

the other hack fix I've seen is simply blobbing a ton of solder over the burned contacts. well if the surface is damaged, you're kind of blocking the power more by doing this right?

friend of mine brought a Centipede board to me one night because he was going to use it for a scoring run the next day and the +5 contacts were burnt to a crisp. I don't recommend doing this, but totally in a pinch here, I wound up using a sanding bit with my dremel and just barely scraped the char off. his board wound up with less voltage drop than the one at the shop! but that's another story... ;)

until we know the integrity of the edge, I would say it's hard to suggest what to do next.
 
the molex connector bypass was suggested by Atari/WMS back in the day. Its a viable solution that works.

I worked for an Atari/WMS distributor when these games were new. We got service bulletins from them all the time. Wish I would have kept them. :(
 
Here are the pics of both sides of the edge connector. The first one of the parts side had been cleaned already. The second one is of the inside that has not been cleaned.
 

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the molex connector bypass was suggested by Atari/WMS back in the day. Its a viable solution that works.

I worked for an Atari/WMS distributor when these games were new. We got service bulletins from them all the time. Wish I would have kept them. :(

hah, no shit. the only thing that's moderately concerning is it's 1 wire vs. 4.

I still stand by the copper tape fix. :p
 
So how does the edge connector look. What do you think i should do.
 
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