Pittsburgh, PA
Hi,
What will it take to use a Bally Nitro Ground Shaker MPU in a Stern Meteor? I assume I will have to replace some ROMS, possibly?
(Topic ID: 179879)
Which MPU is in your NGS?
The -17 or -35?
Yes, you will need to replace the ROMs. Each game has its own set of ROMs. If you have an EPROM burner, you can burn them yourself.
Note that there are different types of ROMs and EPROMs, so it's not just a matter of moving them from one board to another. You need to make sure the board is jumpers correctly, otherwise the EPROMs/ROMs won't work.
http://pinwiki.com/wiki/index.php?title=Bally/Stern#Jumper.2FROM_Info
Then there's the matter of converting the board, either on your own like here:
Or with this conversion adapter here:
http://nvram.weebly.com/repair--conversion-kits.html
You can also buy a refurbished MPU or after-market MPU instead.
I haven't bought the board yet, I just wanted to make sure it's possible. I'm able to get it for $55 shipped, but I'm not sure if it'll be worth it. I feel like it may be more expensive to convert the board than to buy a refurb, what with buying the EPROMs and the burner. I'm not afraid to mess with that stuff or solder in jumpers, it's all about the cost.
The conversion kit and EPROMs came in from barakandl arrived in the mail today! It only took 10 minutes to install. The longest part of the install was waiting for the soldering iron to heat up.
Installed the EPROMs and then soldered in the replacement 220pf caps. A big thank you to MJW &
barakandl for the great deals!
You can remove the PROM at U1 just in case it fails and locks up the CPU. Also looks like the jumpers need changed. Check this chart out on pin wiki. You want jumpers for 2732 @ u2 and u6
http://pinwiki.com/wiki/index.php?title=Bally/Stern#Bally_AS-2518-35_or_AS-2518-133_Jumper_Info
happy you like the conversion module. have fun!
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