Gauntlet DL - bad power supply or bad board?

AtariShag

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The other day my Gauntlet Dark Legacy machine started resetting itself constantly - it was on and had worked fine throughout the day until the afternoon when this began happening. When it reset, it would get into the attract mode and then restart again. I wondered at first if it was an issue with the HDD but I turned it off for a little while to make sure that it wasn't having an overheating issue. When I turned it back on, there was no response from the game and when I check inside I can hear the monitor getting power and the marquee light gets power as well but one of the red LED's near the JAMMA dimly lights up for a second then goes dark, the fans aren't running and there is no other response from the board until I power it off, where a couple of lights on the board then flare up, I hear a brief buzzing noise then it's off completely.

So this has me a little baffled as could it be that the power supply is not giving the game enough power or is it a board issue since the game would reset itself prior to not responding at all?

Thanks in advance
 
Resetting is commonly the HD. LED Display can tell you alot too. Best thing to do is check the +5v at the edge connector/jamma harness.

Kevin
 
The LED display isn't coming on. I just checked the +5 and I got 0.95, assuming I checked it right.
 
After checking that the cabinet stopped powering up entirely so looks like a bad PS at the end of the day. Thanks for the help! I have a War: Final Assault sitting in back that I'm not using (I believe that's a bad HDD since it has a similar resetting problem but it powers up fine). I assume that the PS is the same thing in a War as in GDL?
 
i would double-check the power supplies before doing a swap. if nothing else they may have a different pinout and it could really suck to put the wrong voltage in the wrong spot. mmmmm, smokin'!
 
Agreed.

Even an original new power supply may have to be modified to work correctly.

I just got a new PS for my GL and it came with a connector or two that wasn't correct for my (original) game wiring. I had to crimp up new connectors to make it work correctly.
 
Yeah I caught that - the War has 9 wires and the Gauntlet has 12. I haven't pulled the War PS out yet to see if there are extra wires I can use.

Where is the best place to get new PSes for Dark Legacy, eBay?
 
There's a ton of connectors and wires to make up, including some weird 6 wire connectors that are tied into a 12 wire connector.

I got lucky; I got a brand new power supply for one for free (well, just the shipping cost anyway) and just had to cut off and replace one connector.

I think they are 200 watt supplies.
 
How many versions are there of this power supply? Mine are 1 molex connector.

Kevin


There's a ton of connectors and wires to make up, including some weird 6 wire connectors that are tied into a 12 wire connector.

I got lucky; I got a brand new power supply for one for free (well, just the shipping cost anyway) and just had to cut off and replace one connector.

I think they are 200 watt supplies.
 
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