Konami XMen 4 player PCB not saving settings?

ChanceKJ

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Maybe I'm missing something here. I recently picked up a Konami XMen 4 Player PCB from another user on the site and it seems settings in the test menu aren't saving when i power cycle the cab.

Initially when I installed the board into the cab and turned it on the attract sounds were crazy loud. Obviously theres no volume knob in the board (as per the manual), so you are required to flick the test switch and make game and coin adjustments there.

Sound level, attract mode noises, players per credit, are all things you can adjust, then you need to select "Save and Exit" for it to take the changes. I've done that, and the settings hold after exiting the test menu, but if I power cycle the cab everything I changed goes back to the way it was.

Everything in the boot self test comes up as ok, so im not sure whats going on.

I can't see anything on here that looks like a battery, and there's definitely no coin cell or cell holder on the PCB. I cant seem to find any reference to this problem anywhere else when i search. What am I missing here?
 
it has an EEPROM. you can reinitialize it by holding the test button while powering on. you should see the following messages if you did it right:

0007.png
0008.png

I honestly don't even know what the chip is or its location. the Assault at work had EEPROM issues, I wound up putting it in GQ-4X and manually wrote zeroes to it and put it back in the game and it worked again.
 
Yep. I'm just dumb. Lol. Thank you Mecha.

So at one point in its life the cabinet that I'm using for this build had been converted with an NBA jam kit. Midway games use a latching toggle switch to get into the test menu, not a momentary one like the Konami games used.

I was using the converted switch to go into test mode, but not turning it off when power cycling the game. Not knowing that effectively I was "holding down" the test switch.

Ok, made that mistake and now we've documented that stupidity for anyone else who does the same thing. ☺️
 
Yep. I'm just dumb. Lol. Thank you Mecha.

So at one point in its life the cabinet that I'm using for this build had been converted with an NBA jam kit. Midway games use a latching toggle switch to get into the test menu, not a momentary one like the Konami games used.

I was using the converted switch to go into test mode, but not turning it off when power cycling the game. Not knowing that effectively I was "holding down" the test switch.

Ok, made that mistake and now we've documented that stupidity for anyone else who does the same thing. ☺️
I did the same thing with Simpsons in MK1 cabinet.

it's the only reason I have experience with this issue now LOL
 
you have to do the same thing when you change romsets to AEA to enable freeplay or you get a weird from failure at boot.
 
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