(Topic ID: 148821)

Meteor drop target memory - working?


By OHMI_Arcade

4 years ago



Topic Stats

  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 4 years ago by setzkor
  • Topic is favorited by 2 Pinsiders

You

Linked Games

  • Meteor Stern Electronics, 1979

You're currently viewing posts by Pinsider Superchicken.
Click here to go back to viewing the entire thread.

#5 4 years ago

I just went through a similar issue on Meteor. Put the game into switch test and make sure each target switch registers with the correct switch number. If that checks out, go back into test mode, hitting the button until 1 is in the credit window. Step through each setting/audit (1-17 I think) by press the test button. If you see trash in the score displays, disjoined numbers like "02 520" clear it using the reset button next to the test button. Restart the game a see if anything changes. I my case I had some bad ram (U8 & U13) that was causing problems. Also, not all of the sounds were there, which is another indicator of bad RAM. I replaced them with some NVRAM (http://pinitech.com/products/stern_mpu200_ram.php , http://nvram.weebly.com/) and it fixed the issue. If the garbage keeps coming back in the audits suspect the RAM.

Another common issue is a PIA failure at U10 and/or U11. An easy way to test is to swap the 2 chips (U10 >U11 and U11>U10) and see if you now have a different problem. If so replace one or both (http://nvram.weebly.com/mc6821p-pia.html).

Promoted items from the Pinside Marketplace
$ 149.95
Boards
Allteksystems
Wanted
Machine - Wanted
Calgary, AB
From: $ 18.00
Apparel - Men
Pinside Shop
$ 6.00
Cabinet - Other
Siegecraft Electronics
Trade
Machine - For Trade
Hillsborough, NJ
$ 7.00
$ 44.99
Electronics
PinballElectronics.com

You're currently viewing posts by Pinsider Superchicken.
Click here to go back to viewing the entire thread.

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside